A TWO-STOREY AIRBUS: The large Junkers G.38 airliner has been modified to meet the demand for extra passenger space by the addition of a "second storey" on top of the fuselage, between the wings. A smoking compartment has also been provided. The machine will be put into service between Berlin and London. G.38 Stock Photos and Pictures | Getty Images
Ok...slight exaggeration. It weighs just over a pound and a half.
Sadly, during storage the underside of the starboard wing "puffed-out", probably from heat expansion as that wing has no hole to the hollow insides, and would be difficult to fix. You can't just simply sand this defect away as the whole skin of the aircraft is corrigated.
Specifications G-38: Use: passenger airplane for 37 pass .;
Engine: 4 x Junkers Jumo Diesel 204 with 750 hp each;
Starting weight: 24,000 kg; Preparation mass: 14,900 kg; Payload: 9,100 kg
Span: 44.0 m; Wing area: 305 square meters; Length: 23.2 m; Height: 7.2 m;
Maximum speed: 225 km / h; Travel speed: 210 km / h; Range: 1,000-3,500 km