Used throughout the Second World War to identify friend from foe, these original spotter cards show the differences in the silhouettes between British and German aircraft.

Supermarine Spitfire Mk I

Messerschmitt Bf 110C

Messerschmitt Bf 109E

Junkers Ju 87B

Hawker Hurricane Mk I

Junkers 88A

Heinkel He 111h

Dornier Do 17Z