This pin is about the Interkosmos space program. This pin is probably issued in 1980 when Cuban Arnaldo Tamayo Mendez travelled into orbit in the Interkosmos space program. As a member of the crew of Soyuz 38 he was the first Cuban citizen and the first person of African heritage in space. Together with Yuri Romanenko from the Soviet Union.
He has been honored by the Cuban Government for being the first Cuban, the first Caribbean, and the first Latin American to go into orbit. He was awarded the titles of Hero of the Republic of Cuba and the Order of Playa Giron. He also is a recipient of the Hero of the Soviet Union award.
Interkosmos was a Soviet space program, designed to help the Soviet Union’s allies with manned and unmanned space missions.
The program included the allied east European nations of the Warsaw Pact and other socialist nations like Afghanistan, Cuba, Mongolia, and Vietnam. In addition, pro Soviet  nations such as India and Syria participated, and even France and Austria, despite them being capitalist nations.