Published by the Air Ministry in January 1941. Instructional recognition silhouette or 'spotter' cards for early 1941. Please note these are different to those within the full-set of July 1941 dated cards. 'Green' pack -silhouettes of miscellaneous aircraft. Complete pack comprises 43 card with four distinct/separate views of each aircraft, plus a joker, and the four views represent 'suits', and are as follows: 'General perspective view'; 'Front view'; 'Plan view'; 'Side view'. The Joker shows three or four views of each aircraft on one card. Comes with a folded 'key' sheet dated January 1941. Marked 'For Official Use Only'. The cards cover allied and axis aircraft and are in very good condition whilst the box is a little worn. The 'key' sheet is in good condition. Stock code P12492.