167 results found
City / Airport:Hanover (EDDV / HAJ)Map
Country:Germany
Event:ILA Hanover 1978
Photo Date:June 1978
Photo by:Marijn Aarts (via Joop de Groot)Contact
Photo ID:276127Submit Correction
View count: 240
Registration / Serial:D-ICAR
Aircraft Version:Lear Jet 24A
C/n (msn):24A-169
City / Airport:Hanover (EDDV / HAJ)Map
Country:Germany
Photo Date:June 1978
Photo by:Marijn Aarts (via Joop de Groot)Contact
City / Airport:Hanover (EDDV / HAJ)Map
Country:Germany
Event:ILA Hanover 1978
Photo Date:June 1978
Photo by:Marijn Aarts (via Joop de Groot)Contact
Photo ID:276127Submit Correction
View count: 240
Registration / Serial:D-ICAR
Aircraft Version:Lear Jet 24A
C/n (msn):24A-169
City / Airport:Hanover (EDDV / HAJ)Map
Country:Germany
Photo Date:June 1978
Photo by:Marijn Aarts (via Joop de Groot)Contact
City / Airport:Washington - Dulles International (KIAD / IAD)Map
Region / Country:Virginia, United States
Collection:National Air and Space Museum (Smithsonian) - Udvar-Hazy Center
Photo Date:20 April 2004
Photo by:R.A.Scholefield
Photo ID:257872Submit Correction
View count: 440
The second prototype Lear Jet 23 exhibited at the NASM.
Registration / Serial:N802L
Aircraft Version:Lear Jet 23
C/n (msn):23-002
City / Airport:Washington - Dulles International (KIAD / IAD)Map
Region / Country:Virginia, United States
Photo Date:20 April 2004
Photo by:R.A.Scholefield
City / Airport:Washington - Dulles International (KIAD / IAD)Map
Region / Country:Virginia, United States
Collection:National Air and Space Museum (Smithsonian) - Udvar-Hazy Center
Photo Date:20 April 2004
Photo by:R.A.Scholefield
Photo ID:257872Submit Correction
View count: 440
The second prototype Lear Jet 23 exhibited at the NASM.
Registration / Serial:N802L
Aircraft Version:Lear Jet 23
C/n (msn):23-002
City / Airport:Washington - Dulles International (KIAD / IAD)Map
Region / Country:Virginia, United States
Photo Date:20 April 2004
Photo by:R.A.Scholefield
City / Airport:London - Heathrow (EGLL / LHR)Map
Region / Country:England, United Kingdom
Photo Date:April 1976
Photo by:Trevor WarneContact
Photo ID:257338Submit Correction
View count: 176
This registration was later used on a Boeing 727. It was later TR-LYB and F-GDAE which was cancelled as sold in August 2013 as sold. Scanned from a slide.
Registration / Serial:N111EK
Aircraft Version:Lear Jet 24
C/n (msn):24-105
City / Airport:London - Heathrow (EGLL / LHR)Map
Region / Country:England, United Kingdom
Photo Date:April 1976
Photo by:Trevor WarneContact
City / Airport:London - Heathrow (EGLL / LHR)Map
Region / Country:England, United Kingdom
Photo Date:April 1976
Photo by:Trevor WarneContact
Photo ID:257338Submit Correction
View count: 176
This registration was later used on a Boeing 727. It was later TR-LYB and F-GDAE which was cancelled as sold in August 2013 as sold. Scanned from a slide.
Registration / Serial:N111EK
Aircraft Version:Lear Jet 24
C/n (msn):24-105
City / Airport:London - Heathrow (EGLL / LHR)Map
Region / Country:England, United Kingdom
Photo Date:April 1976
Photo by:Trevor WarneContact
City / Airport:Riverside - Municipal (KRAL / RAL)Map
Region / Country:California, United States
Photo Date:2 September 1981
Photo by:Geoff Goodall (via David Carter)Website
Photo ID:256961Submit Correction
View count: 1345
Reregistered N225LJ in 1994
Registration / Serial:N711TJ
Aircraft Version:Lear Jet 24A
C/n (msn):24A-011
City / Airport:Riverside - Municipal (KRAL / RAL)Map
Region / Country:California, United States
Photo Date:2 September 1981
Photo by:Geoff Goodall (via David Carter)Website
City / Airport:Riverside - Municipal (KRAL / RAL)Map
Region / Country:California, United States
Photo Date:2 September 1981
Photo by:Geoff Goodall (via David Carter)Website
Photo ID:256961Submit Correction
View count: 1345
Reregistered N225LJ in 1994
Registration / Serial:N711TJ
Aircraft Version:Lear Jet 24A
C/n (msn):24A-011
City / Airport:Riverside - Municipal (KRAL / RAL)Map
Region / Country:California, United States
Photo Date:2 September 1981
Photo by:Geoff Goodall (via David Carter)Website
Registration / Serial:N933NA
Alternate Registration:NASA 933
Aircraft Original Type:Lear Jet 23/24
Aircraft Generic Type:Lear Jet 23/24
Aircraft Version:Lear Jet 23
C/n (msn):23-049
Operator Titles:NASA - National Aeronautics and Space Administration
Unit Markings:National Space Technology Laboratories
City / Airport:Tucson - International (KTUS / TUS)Map
Region / Country:Arizona, United States
Photo Date:9 November 1981
Photo by:Geoff Goodall (via David Carter)Website
Photo ID:248619Submit Correction
View count: 518
Later reregistered N605NA.
Registration / Serial:N933NA
Alternate Registration:NASA 933
Aircraft Version:Lear Jet 23
C/n (msn):23-049
Operator Titles:NASA - National Aeronautics and Space Administration
City / Airport:Tucson - International (KTUS / TUS)Map
Region / Country:Arizona, United States
Photo Date:9 November 1981
Photo by:Geoff Goodall (via David Carter)Website
Registration / Serial:N933NA
Alternate Registration:NASA 933
Aircraft Original Type:Lear Jet 23/24
Aircraft Generic Type:Lear Jet 23/24
Aircraft Version:Lear Jet 23
C/n (msn):23-049
Operator Titles:NASA - National Aeronautics and Space Administration
Unit Markings:National Space Technology Laboratories
City / Airport:Tucson - International (KTUS / TUS)Map
Region / Country:Arizona, United States
Photo Date:9 November 1981
Photo by:Geoff Goodall (via David Carter)Website
Photo ID:248619Submit Correction
View count: 518
Later reregistered N605NA.
Registration / Serial:N933NA
Alternate Registration:NASA 933
Aircraft Version:Lear Jet 23
C/n (msn):23-049
Operator Titles:NASA - National Aeronautics and Space Administration
City / Airport:Tucson - International (KTUS / TUS)Map
Region / Country:Arizona, United States
Photo Date:9 November 1981
Photo by:Geoff Goodall (via David Carter)Website
City / Area:Tucson / Pima Museum [ Off-Airport ]Map
Region / Country:Arizona, United States
Collection:Pima Air and Space Museum
Photo Date:11 February 2008
Photo by:Kas van ZonneveldContact
Photo ID:243198Submit Correction
View count: 170
Operated privately from 1964 until 1992, when it ended up at Pima.
Registration / Serial:N88B
Aircraft Version:Lear Jet 24
C/n (msn):24-015
City / Area:Tucson / Pima Museum [ Off-Airport ]Map
Region / Country:Arizona, United States
Photo Date:11 February 2008
Photo by:Kas van ZonneveldContact
City / Area:Tucson / Pima Museum [ Off-Airport ]Map
Region / Country:Arizona, United States
Collection:Pima Air and Space Museum
Photo Date:11 February 2008
Photo by:Kas van ZonneveldContact
Photo ID:243198Submit Correction
View count: 170
Operated privately from 1964 until 1992, when it ended up at Pima.
Registration / Serial:N88B
Aircraft Version:Lear Jet 24
C/n (msn):24-015
City / Area:Tucson / Pima Museum [ Off-Airport ]Map
Region / Country:Arizona, United States
Photo Date:11 February 2008
Photo by:Kas van ZonneveldContact
Registration / Serial:N429EJ
Aircraft Original Type:Lear Jet 23/24
Aircraft Generic Type:Lear Jet 23/24
Aircraft Version:Lear Jet 23
C/n (msn):23-023
Operator Titles:Executive Jet Aviation - EJA
City / Airport:Washington - Dulles International (KIAD / IAD)Map
Region / Country:Virginia, United States
Event:Transpo 1972
Photo Date:June 1972
Photo from:Joop de Groot CollectionContact
Photo ID:237079Submit Correction
View count: 826
Photo via G. Bouma
Registration / Serial:N429EJ
Aircraft Version:Lear Jet 23
C/n (msn):23-023
Operator Titles:Executive Jet Aviation - EJA
City / Airport:Washington - Dulles International (KIAD / IAD)Map
Region / Country:Virginia, United States
Photo Date:June 1972
Photo from:Joop de Groot CollectionContact
Registration / Serial:N429EJ
Aircraft Original Type:Lear Jet 23/24
Aircraft Generic Type:Lear Jet 23/24
Aircraft Version:Lear Jet 23
C/n (msn):23-023
Operator Titles:Executive Jet Aviation - EJA
City / Airport:Washington - Dulles International (KIAD / IAD)Map
Region / Country:Virginia, United States
Event:Transpo 1972
Photo Date:June 1972
Photo from:Joop de Groot CollectionContact
Photo ID:237079Submit Correction
View count: 826
Photo via G. Bouma
Registration / Serial:N429EJ
Aircraft Version:Lear Jet 23
C/n (msn):23-023
Operator Titles:Executive Jet Aviation - EJA
City / Airport:Washington - Dulles International (KIAD / IAD)Map
Region / Country:Virginia, United States
Photo Date:June 1972
Photo from:Joop de Groot CollectionContact
City / Airport:Fort Lauderdale - Hollywood International (KFLL / FLL)Map
Region / Country:Florida, United States
Photo Date:13 November 1979
Photo by:Danny GrewContact
Photo ID:225915Submit Correction
View count: 191
Damaged beyond economical repair 7 May 86 landing at Hollywood - North Perry Airport FL
Registration / Serial:N55NJ
Aircraft Version:Lear Jet 24
C/n (msn):24-162
City / Airport:Fort Lauderdale - Hollywood International (KFLL / FLL)Map
Region / Country:Florida, United States
Photo Date:13 November 1979
Photo by:Danny GrewContact
City / Airport:Fort Lauderdale - Hollywood International (KFLL / FLL)Map
Region / Country:Florida, United States
Photo Date:13 November 1979
Photo by:Danny GrewContact
Photo ID:225915Submit Correction
View count: 191
Damaged beyond economical repair 7 May 86 landing at Hollywood - North Perry Airport FL
Registration / Serial:N55NJ
Aircraft Version:Lear Jet 24
C/n (msn):24-162
City / Airport:Fort Lauderdale - Hollywood International (KFLL / FLL)Map
Region / Country:Florida, United States
Photo Date:13 November 1979
Photo by:Danny GrewContact
City / Airport:Groningen - Eelde (EHGG / GRQ)Map
Country:Netherlands
Photo Date:August 1968 to May 1970
Photo from:Kas van Zonneveld CollectionContact
Photo ID:220660Submit Correction
View count: 221
Delivered on August 9, 1968. Cancelled June 1971. Ex. N706L. Later became F-BSTP, N26008, N404AJ, N222GH, N404DB and N540CL.
Registration / Serial:HB-VBA
Aircraft Version:Lear Jet 23
C/n (msn):23-026
City / Airport:Groningen - Eelde (EHGG / GRQ)Map
Country:Netherlands
Photo Date:August 1968 to May 1970
Photo from:Kas van Zonneveld CollectionContact
City / Airport:Groningen - Eelde (EHGG / GRQ)Map
Country:Netherlands
Photo Date:August 1968 to May 1970
Photo from:Kas van Zonneveld CollectionContact
Photo ID:220660Submit Correction
View count: 221
Delivered on August 9, 1968. Cancelled June 1971. Ex. N706L. Later became F-BSTP, N26008, N404AJ, N222GH, N404DB and N540CL.
Registration / Serial:HB-VBA
Aircraft Version:Lear Jet 23
C/n (msn):23-026
City / Airport:Groningen - Eelde (EHGG / GRQ)Map
Country:Netherlands
Photo Date:August 1968 to May 1970
Photo from:Kas van Zonneveld CollectionContact
City / Airport:Brussels - National / Melsbroek (EBBR / EBMB / BRU)Map
Country:Belgium
Photo Date:5 August 1977
Photo by:Danny GrewContact
Photo ID:217366Submit Correction
View count: 304
As most Bizz Jets do, it went on to operate with a bucket load of different tail numbers, mainly in the USA, until last noted as XA-UHT in May 2007.
Registration / Serial:D-IEGO
Aircraft Version:Lear Jet 24/XR
C/n (msn):24XR-283
City / Airport:Brussels - National / Melsbroek (EBBR / EBMB / BRU)Map
Country:Belgium
Photo Date:5 August 1977
Photo by:Danny GrewContact
City / Airport:Brussels - National / Melsbroek (EBBR / EBMB / BRU)Map
Country:Belgium
Photo Date:5 August 1977
Photo by:Danny GrewContact
Photo ID:217366Submit Correction
View count: 304
As most Bizz Jets do, it went on to operate with a bucket load of different tail numbers, mainly in the USA, until last noted as XA-UHT in May 2007.
Registration / Serial:D-IEGO
Aircraft Version:Lear Jet 24/XR
C/n (msn):24XR-283
City / Airport:Brussels - National / Melsbroek (EBBR / EBMB / BRU)Map
Country:Belgium
Photo Date:5 August 1977
Photo by:Danny GrewContact
City / Airport:El Mirage - El Mirage Field Adelanto (99CL)Map
Region / Country:California, United States
Photo Date:16 February 2004
Photo by:StreepContact
Photo ID:210377Submit Correction
View count: 1278
Former Kalitta Charters Learjet, still in their distinctive colours. It was built in 1965! Now for sale as a movieprop or art work at the Aviation Warehouse in Adelanto (CA). Bought by an Algerian artist and put on display in Paris.
Registration / Serial:N31CK
Aircraft Version:Lear Jet 23
C/n (msn):23-079
Operator Titles:Kalitta Charters
City / Airport:El Mirage - El Mirage Field Adelanto (99CL)Map
Region / Country:California, United States
Photo Date:16 February 2004
Photo by:StreepContact
City / Airport:El Mirage - El Mirage Field Adelanto (99CL)Map
Region / Country:California, United States
Photo Date:16 February 2004
Photo by:StreepContact
Photo ID:210377Submit Correction
View count: 1278
Former Kalitta Charters Learjet, still in their distinctive colours. It was built in 1965! Now for sale as a movieprop or art work at the Aviation Warehouse in Adelanto (CA). Bought by an Algerian artist and put on display in Paris.
Registration / Serial:N31CK
Aircraft Version:Lear Jet 23
C/n (msn):23-079
Operator Titles:Kalitta Charters
City / Airport:El Mirage - El Mirage Field Adelanto (99CL)Map
Region / Country:California, United States
Photo Date:16 February 2004
Photo by:StreepContact
City / Airport:Abingdon (EGUD / ABB)Map
Region / Country:England, United Kingdom
Photo Date:1 July 1971
Photo by:R.A.Scholefield
Photo ID:207884Submit Correction
View count: 378
Competitor number 64 in the London to Victoria BC Air Race
Registration / Serial:N33BK
Aircraft Version:Lear Jet 24B
C/n (msn):24B-196
City / Airport:Abingdon (EGUD / ABB)Map
Region / Country:England, United Kingdom
Photo Date:1 July 1971
Photo by:R.A.Scholefield
City / Airport:Abingdon (EGUD / ABB)Map
Region / Country:England, United Kingdom
Photo Date:1 July 1971
Photo by:R.A.Scholefield
Photo ID:207884Submit Correction
View count: 378
Competitor number 64 in the London to Victoria BC Air Race
Registration / Serial:N33BK
Aircraft Version:Lear Jet 24B
C/n (msn):24B-196
City / Airport:Abingdon (EGUD / ABB)Map
Region / Country:England, United Kingdom
Photo Date:1 July 1971
Photo by:R.A.Scholefield
City / Airport:Victoria - International (CYYJ / YYJ)Map
Region / Country:British Columbia, Canada
Photo Date:7 January 2014
Photo by:Tim MartinContact
Photo ID:205647Submit Correction
View count: 283
Registration / Serial:XA-LNK
Aircraft Version:Lear Jet 24
C/n (msn):24-174
Operator Titles:AirLink Executive
City / Airport:Victoria - International (CYYJ / YYJ)Map
Region / Country:British Columbia, Canada
Photo Date:7 January 2014
Photo by:Tim MartinContact
City / Airport:Victoria - International (CYYJ / YYJ)Map
Region / Country:British Columbia, Canada
Photo Date:7 January 2014
Photo by:Tim MartinContact
Photo ID:205647Submit Correction
View count: 283
Registration / Serial:XA-LNK
Aircraft Version:Lear Jet 24
C/n (msn):24-174
Operator Titles:AirLink Executive
City / Airport:Victoria - International (CYYJ / YYJ)Map
Region / Country:British Columbia, Canada
Photo Date:7 January 2014
Photo by:Tim MartinContact
City / Airport:Victoria - International (CYYJ / YYJ)Map
Region / Country:British Columbia, Canada
Photo Date:20 April 2008
Photo by:Tim MartinContact
Photo ID:195314Submit Correction
View count: 207
Registration / Serial:XA-LNK
Aircraft Version:Lear Jet 24
C/n (msn):24-174
Operator Titles:AirLink Executive
City / Airport:Victoria - International (CYYJ / YYJ)Map
Region / Country:British Columbia, Canada
Photo Date:20 April 2008
Photo by:Tim MartinContact
City / Airport:Victoria - International (CYYJ / YYJ)Map
Region / Country:British Columbia, Canada
Photo Date:20 April 2008
Photo by:Tim MartinContact
Photo ID:195314Submit Correction
View count: 207
Registration / Serial:XA-LNK
Aircraft Version:Lear Jet 24
C/n (msn):24-174
Operator Titles:AirLink Executive
City / Airport:Victoria - International (CYYJ / YYJ)Map
Region / Country:British Columbia, Canada
Photo Date:20 April 2008
Photo by:Tim MartinContact
City / Airport:London - Heathrow (EGLL / LHR)Map
Region / Country:England, United Kingdom
Photo Date:1 July 1976
Photo by:Trevor WarneContact
Photo ID:191406Submit Correction
View count: 479
This is a 1966 production aircraft . Previously N288VW it later became N16MJ, HZ-SMB, N90DH, N92DF, N140EX and N24SA which was cancelled in 1989 Scanned from a slide.
Registration / Serial:F-BRAL
Aircraft Version:Lear Jet 24
C/n (msn):24-117
City / Airport:London - Heathrow (EGLL / LHR)Map
Region / Country:England, United Kingdom
Photo Date:1 July 1976
Photo by:Trevor WarneContact
City / Airport:London - Heathrow (EGLL / LHR)Map
Region / Country:England, United Kingdom
Photo Date:1 July 1976
Photo by:Trevor WarneContact
Photo ID:191406Submit Correction
View count: 479
This is a 1966 production aircraft . Previously N288VW it later became N16MJ, HZ-SMB, N90DH, N92DF, N140EX and N24SA which was cancelled in 1989 Scanned from a slide.
Registration / Serial:F-BRAL
Aircraft Version:Lear Jet 24
C/n (msn):24-117
City / Airport:London - Heathrow (EGLL / LHR)Map
Region / Country:England, United Kingdom
Photo Date:1 July 1976
Photo by:Trevor WarneContact
City / Airport:Denver - Stapleton International (KDEN / DEN) (closed)Map
Region / Country:Colorado, United States
Photo Date:18 September 1968
Photo by:Neil AirdContact
Photo ID:191266Submit Correction
View count: 203
Registration / Serial:N605GA
Aircraft Version:Lear Jet 24A
C/n (msn):24-119
City / Airport:Denver - Stapleton International (KDEN / DEN) (closed)Map
Region / Country:Colorado, United States
Photo Date:18 September 1968
Photo by:Neil AirdContact
City / Airport:Denver - Stapleton International (KDEN / DEN) (closed)Map
Region / Country:Colorado, United States
Photo Date:18 September 1968
Photo by:Neil AirdContact
Photo ID:191266Submit Correction
View count: 203
Registration / Serial:N605GA
Aircraft Version:Lear Jet 24A
C/n (msn):24-119
City / Airport:Denver - Stapleton International (KDEN / DEN) (closed)Map
Region / Country:Colorado, United States
Photo Date:18 September 1968
Photo by:Neil AirdContact
City / Airport:Chino (KCNO / CNO)Map
Region / Country:California, United States
Collection:Yanks Air Museum
Photo Date:5 January 2008
Photo by:R.A.Scholefield
Photo ID:187345Submit Correction
View count: 293
Registration / Serial:N73CE
Aircraft Version:Lear Jet 23
C/n (msn):23-068
City / Airport:Chino (KCNO / CNO)Map
Region / Country:California, United States
Photo Date:5 January 2008
Photo by:R.A.Scholefield
City / Airport:Chino (KCNO / CNO)Map
Region / Country:California, United States
Collection:Yanks Air Museum
Photo Date:5 January 2008
Photo by:R.A.Scholefield
Photo ID:187345Submit Correction
View count: 293
Registration / Serial:N73CE
Aircraft Version:Lear Jet 23
C/n (msn):23-068
City / Airport:Chino (KCNO / CNO)Map
Region / Country:California, United States
Photo Date:5 January 2008
Photo by:R.A.Scholefield
City / Airport:London - Heathrow (EGLL / LHR)Map
Region / Country:England, United Kingdom
Photo Date:1976
Photo by:Trevor WarneContact
Photo ID:160264Submit Correction
View count: 155
On the General aviation apron at Heathrow in 1976, this Lear 24 was built in 1966 and carried many registrations in a career that ended with it being broken up as N128WD in 2004. Scanned from a slide
Registration / Serial:HB-VBK
Aircraft Version:Lear Jet 24
C/n (msn):24-128
City / Airport:London - Heathrow (EGLL / LHR)Map
Region / Country:England, United Kingdom
Photo Date:1976
Photo by:Trevor WarneContact
City / Airport:London - Heathrow (EGLL / LHR)Map
Region / Country:England, United Kingdom
Photo Date:1976
Photo by:Trevor WarneContact
Photo ID:160264Submit Correction
View count: 155
On the General aviation apron at Heathrow in 1976, this Lear 24 was built in 1966 and carried many registrations in a career that ended with it being broken up as N128WD in 2004. Scanned from a slide
Registration / Serial:HB-VBK
Aircraft Version:Lear Jet 24
C/n (msn):24-128
City / Airport:London - Heathrow (EGLL / LHR)Map
Region / Country:England, United Kingdom
Photo Date:1976
Photo by:Trevor WarneContact
City / Airport:Paris - Le Bourget (LFPB / LBG)Map
Country:France
Photo Date:1977 to 1979
Photo by:Gerard HelmerContact
Photo ID:152993Submit Correction
View count: 210
Registration / Serial:F-BTYV
Aircraft Version:Lear Jet 24B
C/n (msn):24B-206
City / Airport:Paris - Le Bourget (LFPB / LBG)Map
Country:France
Photo Date:1977 to 1979
Photo by:Gerard HelmerContact
City / Airport:Paris - Le Bourget (LFPB / LBG)Map
Country:France
Photo Date:1977 to 1979
Photo by:Gerard HelmerContact
Photo ID:152993Submit Correction
View count: 210
Registration / Serial:F-BTYV
Aircraft Version:Lear Jet 24B
C/n (msn):24B-206
City / Airport:Paris - Le Bourget (LFPB / LBG)Map
Country:France
Photo Date:1977 to 1979
Photo by:Gerard HelmerContact
City / Area:Tucson / Pima Museum [ Off-Airport ]Map
Region / Country:Arizona, United States
Collection:Pima Air and Space Museum
Photo Date:22 February 2012
Photo from:Gert Jan Mentink CollectionContact
Photo ID:142515Submit Correction
View count: 126
Registration / Serial:N88B
Aircraft Version:Lear Jet 24
C/n (msn):24-015
City / Area:Tucson / Pima Museum [ Off-Airport ]Map
Region / Country:Arizona, United States
Photo Date:22 February 2012
Photo from:Gert Jan Mentink CollectionContact
City / Area:Tucson / Pima Museum [ Off-Airport ]Map
Region / Country:Arizona, United States
Collection:Pima Air and Space Museum
Photo Date:22 February 2012
Photo from:Gert Jan Mentink CollectionContact
Photo ID:142515Submit Correction
View count: 126
Registration / Serial:N88B
Aircraft Version:Lear Jet 24
C/n (msn):24-015
City / Area:Tucson / Pima Museum [ Off-Airport ]Map
Region / Country:Arizona, United States
Photo Date:22 February 2012
Photo from:Gert Jan Mentink CollectionContact