Two decks, one red and one blue. We are pleased to offer this pack of authentic reproduction "International Aircraft Silhouette Spotter Cards," originally produced for the United States military in 1942. Box includes instruction card and two jokers, sealed, and cellophane wrapped. These are genuine Bicycle brand playing cards produced in the USA by the United States Playing Card Company from their original plates. These cards feature silhouette images of Allied and enemy aircraft in use during WW II. These decks were designed to be entertaining as well as educational. The images depict a front, side and bottom silhouette of the aircraft, the view ground observers would be most likely to see.