Issued in 1980, this vibrant three-stamp set celebrates the Interkosmos program, highlighting international cooperation in space exploration. The designs depict joint missions aboard the Salyut space station, scientific experiments in zero gravity, and collaboration between the USSR and allied nations such as Cuba. The bold Interkosmos emblem symbolizes socialist unity in space research. With strong Cold War-era thematic appeal, this set is highly collectible for space, astronautics, and international cooperation collectors. Bright multicolor artwork and dynamic space scenes make it visually striking in thematic exhibits.