Special USSR Russian badge commemorating "APOLLO" "SOYUZ" TEST PROJECT (ASTP) in July 15, 1975.

Brass & Hot Enamel.

Size: 4 cm in diameter. Weight: 19 grams.

New.

The Apollo–Soyuz Test Project (ASTP) 

(Russian: Экспериментальный полёт «Союз» — «Аполлон», 

Eksperimantalniy polyot Soyuz-Apollon, lit. "Experimental flight Soyuz-Apollo"), 

conducted in July 1975, was the first joint U.S.–Soviet space flight, 

and the last flight of an Apollo spacecraft.

Its primary purpose was as a symbol of the policy of détente 

that the two superpowers were pursuing at the time, 

and marked the end of the Space Race between them that began in 1957.