This pin is about GTO organization. This is the GTO II made in the 1960’s.
Ready for Labour and Defence of the USSR, abbreviated as GTO (Russian: ГТО) was the All-Union physical culture training programme, introduced in the USSR on March 11, 1931 on the initiative of the Komsomol (the youth movement).
It was a complement to the Unified Sports Classification System of the USSR. While the latter provided Soviet physical education system requirements only for athletes, GTO was a programme for all Soviet people of almost all ages. By the year 1976, 220 million people were awarded GTO badges, while in 1986 the tests were passed by 33.9 million people.
After the breakup of the USSR in 1991, the GTO programme was eliminated in the most of former Soviet republics. In Russia the GTO programme did not exist for some ten years, but has begun to be revived since 2003. On March 24, 2014 president Vladimir Putin signed a decree to restore GTO in modern Russian Federation under the same traditional name.