Munich Summer Olympics - Unusual 2-D Dual-Image Complete Mint Set of 8

The 1972 Summer Olympics held in Munich made stars of swimmer Mark Spitz, gymnast Olga Korbut, and a nail-biting basketball final between the United States and the Soviet Union. By tilting these fascinating dual image or 2-D stamps, each stamp depicts two Olympic sports such as basketball, swimming, track and field and gymnastics. (Ajman Michel #1434-41)