USSR Russian badge commemorating the Vostok spacecraft.
Size - 27mm x 25mm(1.01" x 1").
Badge with 6mm pin(butterfly) at the back to fix it to a jacket.
The Vostok was a type of spacecraft built by the Soviet Union.
The first human space-flight in history was accomplished on this spacecraft on April 12, 1961, by Soviet cosmonaut Yuri Gagarin.