Older Potez XV A2 reconnaissance aircraft, used as trainers, including 428 / A3, 449 / A4, 451 /E1 and 447 / E4. Photo dated 1935 which would just be possible both for the Potez XVs and the Junkers F13s in the background. Cropped photo; the wingtip in the foreground is of 435 / A1. We are grateful for any information about the prewar Polish serial numbers and unit code systems. Photo from: Narodowe Archiwum Cyfrowe

Poland received 110 Potez XV A2 reconnaissance aircraft and XV B2 light bombers from France from 1924. Another 100 A2s were built by Plage i Laśkiewicz and 35 by PWS. From 1927 until about 1935 they were used as trainers and the photo is dated 1935 by the source. We are assuming that construction numbers were used as serials by the Polish military, as in France and Germany. Cropped photo; 437 / A2 and others are in the background. Photo from: Narodowe Archiwum Cyfrowe

Flown back to New Zealand in October 1945 and sold for scrap in March 1948. Photo from: Air Force Museum of New Zealand

Lost during a raid on Hamburg on November 20, 1944. Crew became prisoners-of-war. Photo from: Air Force Museum of New Zealand

Built in Marina di Pisa and powered by Rolls-Royce Eagles, ex I-DAAR. One of four Wals bought by Nordiska, a subsidiary of Deutscher Aero Lloyd, for its Danzig - Stockholm service. To Lufthansa in 1926. Used on the Stettin - Kalmar -Stockholm route, and between Bremerhaven and Heligoland in summer. D-861 visited Oslo in July 1927, and sank following an accident on 6 October 1931. Photo from: KB - National Library of the Netherlands

'The Potez aircraft of Marmier.' Four-passenger airliner of CFRNA, the French-Romanian airline, which from September 1922 operated a Paris to Bucharest service via Strasbourg, Prague, Vienna, Budapest and Arad - a really long haul at that time. French ace Lionel de Marmier worked for this company and also for Potez. CFRNA became CIDNA in 1925. It is safe to assume that the aircraft name is Regina Maria - Queen Maria of Romania did a lot to bring her country into World War I on the Allied side. Photo from: Bibliothèque nationale de France - Gallica

Sold after World War II as CF-BYI. Photo from: Library and Archives Canada

Middle part of panorama photo showing a line-up of five Potez XVII aircraft of the Bulgarian army. Towards the left is B-BPEK. Photo from: Lost Bulgaria

The Potez XVII was a variant of the Potez XV reconnaissance aircraft. Six or eight examples were supplied to Bulgaria and based at the main Bozhurishte airfield near Sofia. These military aircraft wore civilian registrations with the B repeated on the tailfin. Left part of a panaroma photo. On the right is B-BPEC. Photo from: Lost Bulgaria

The Ju 46 was a W34 derivative as a mailplane, to be catapulted from ocean liners, and as such a seaplane, but D-2491 was delivered as a landplane in June 1933. Swastika flag decreed on port side of the rudder in July 1933. Renamed Bremen as a catapult seaplane in 1934, painted red. To D-UHYL. Last launch from steamer of the same name on 9 October 1935, 1028 km (639 miles) off Southampton. To D-OBRA of Lufthansa. To Hansa Luftdienst. Photographed in the summer of 1939 doing sightseeing flights at Pörtschach am Wörthersee, still as a seaplane. Photo from: Lufthansa

First flown as G-18-142 in 1953. Sold to Air Vietnam in October 1953. Sold to a company in Algeria in August 1957 as F-OBDR. Used by Corse Air and other operators from 1962 as F-BCDR. Last seen stored at Nîmes - Garons. Photo assumed taken at Filton. Photo from: Bristol

The RCAF evaluated the Continental R-670 powered M-62B (PT-23) and the Ranger powered M-62 (PT-19) before selecting the Ranger-engined aircraft for production by Fleet Aircraft as the Cornell. Both versions were offered to Canada with cockpit canopies. NX28692 was sold by Fairchild as NC28692 and later N28692. It was cancelled from the register in 1960. Photo from: Library and Archives Canada

Destroyed by fire after the engine backfired after landing at Ferland, Ontario on February 14, 1941.

Deleted from the register in 1951 for reasons that are not known. Photo from: Library and Archives Canada

Built in 1930. Shipped to Europe for a tour of the Mediterranean by American socialite Margery Durant, December 1931 to May 1932. The pilot was Charles LaJotte. Aircraft was painted blue according to glass-plate slides which were hand-coloured early on. To Sweden as SE-EKN in 1934 for a Stockholm - Gothenburg service. Bought by the Basque government in 1936 and flown to Bilbao via Groningen and Amsterdam to be used in Spanish Civil War on Republican side, but shot down by a Republican Polikarpov I-15 on 30 July 1937, lacking Republican markings. Photo from: Bibliothèque nationale de France - Gallica

First flown in May 1923, the Bloodhound was two-seat reconnaissance fighter which was not successful. Four examples were built. The prototype, G-EBGG, initially had smaller tail surfaces. The wings were also tweaked. It ended up as test bed for the Bristol Jupiter VI engine - photo probably taken on 8 March 1926 after flying 25,074 miles without replacement of its Jupiter VI, 'under official ubservation' by Imperial Airways. The pilots are Dan Minchin and Charles Barnard, left. Both men became fans of the Jupiter-powered Fokker F.VIIa and made long-distance flights with Lady Anne Savile and 'The Flying Duchess' Mary of Bedford, respectively. Minchin and Anne died in a westbound Atlantic crossing attempt. Photo from: Bristol

The Boarhound prototype, unsuccessful as a contender to replace the Bristol Fighter in the army cooperation role. Photo from: Bristol

NZ2427 sold by tender in 1958 and stored. In the 1990s it was shipped to the UK where it was rebuilt as G-MSTG. Involved in a fatal accident on October 2, 2016. Later restored to the UK register as G-CLNV. Photo from: Air Force Museum of New Zealand

B3855 flown by New Zealander Capt. Harold Beamish when he was with 203 Squadron of the newly formed RAF. Photo from: Air Force Museum of New Zealand

Official German photo from World War I that has found its way into several collections. Only 17 WD.11s were built but they served in Belgium (Zeebrugge) and Latvia in addition to Germany where most of the survivors were at Hage when the war ended. Photo from: Air Force Museum of New Zealand