This is the official NASA patch worn by the Apollo Soyuz crew.
Iron on patch
Measure 4 inches in diameter
About the Mission:
The Soyuz was launched just over seven hours prior to the launch of the Apollo CSM. Apollo then maneuvered to rendezvous and docking 52 hours after the Soyuz launch. The Apollo and Soyuz crews conducted a variety of experiments over a two-day period. After separation, Apollo remained in space an additional 6 days. Soyuz returned to Earth approximately 43 hours after separation.
Apollo Soyuz Crew Date: July 15-24, 1975 Crew Thomas P. Stafford Vance D. Brand Donald K. Slayton