Junkers W 34

The aircraft was developed from the Junkers W 33, which was known as a record-breaking aircraft. Further development led to the Junkers Ju 46, a catapulted seaplane for naval use.A Junkers W 34 be/b3e managed to break the then current altitude record on 26 May 1929, when it reached 12,739 metres (41,795 ft).The Junkers W 34 was produced in many different versions. The total number of examples produced for the civil market was around 1,000, a further 2,024 his and haus were built under license for the RLM and the Luftwaffe. source wikipedia