Another interesting puzzle. The Ju 52 production list quickly revealed the aircraft name, but also that Lufthansa had four Iron Annies named Olaf Bielenstein between 1935 and 1945. The source says this is a 'German naval station', implying a wartime shot. However, a look under the wing rules out D-AVAJ, D-AIAG and D-ASHB, so this must be D-APOR, which served on the DLH route to Oslo in 1936. To Syndicato Condor as PP-CBF in 1938. To Argentine air force in 1946 as T-155. To Argentine ministry of Agriculture in 1951 as LV-ZBH and even returned to service as late as 1956. Photo from: National Museum of Denmark