On the 16th June 1963, Valentina Tereshkova, a twenty-six year old former factory worker and amateur parachutist, became the first woman cosmonaut to travel into space. On a mission that lasted three days and which orbited the Earth forty-eight times, Tereshkova was the sole pilot of 'Vostok 6'. Through completing her mission, she simultaneously became the first civillian space explorer.
It was to be another nineteen years in 1982, before the second woman would follow inTereshkova's 'footsteps' and would once again venture from our planet. To celebrate the 20th anniversary of this historic flight, a 10k stamp was issued on the 19th June 1983. Produced both in large sheets and in small sheetlets of eight, the stamps featured Valentina Tereshkova and the spacecraft 'Vostok 6'. These smaller sheetlets (along with many others issued in the early 1980s) are from limited printings, and are therefore subsequently much scarcer to find.
This is a fine-looking example of the Tereshkova sheetlet.