This is the Soviet rubber cosmonaut toy I blogged about a while ago---designed in 1962 Czechoslovakia by Libuse Niklova. This toy [later named Kelvin the Cosmonaut (Kelvin from the movie Solaris)] and I are basically the same age.
He arrived from eBay yesterday, wearing his nonremovable scratched and clouded helmet. This morning he is seeing the clear light of day for the first time in... who knows how long?
The eBayer told me:
"We got it in Czechoslovakia either on our honeymoon in 1962 or in 1964 when we again visited relatives in Kosice, this time with our 11-month old son. I suspect the relatives gave the toy to the baby."