Heinkel HD 42/He 42 BB+P? (it could be BB+PI) seaplane trainer. Both floats appear to be damaged at the front. The aircraft's rather unfortunate orientation on the crane's hook seems to indicate that it is being recovered from the water, suggesting an incident in connection with the damaged floats.
The HD 42 was powered by a Junkers L 5 Ga inline engine. Note that the underside of the tips of BB+P?'s upper wing are painted in a darker colour. Exact date and location unknown. (German Aviation 1919-1945 collection)