This is a rare vintage 1963 joint Vostok 5 and Vostok 6 Cover with enclosed card hand signed by their respective Crew members Valery Bykovsky and Valentina Tereshkova, celebrating the successful completion of the simultaneous missions.

Vostok 5 flown by Bykovsky finally launched after several delays on 14th June 1963. Vostok 6 with Tereshkova launched 2 days later on 16th June 1963 when she became the first woman to enter Space. After establishing radio contact between the two craft and successfuly completing their tasks, both vehicles returned to Earth on 19th June 1963. Although the Mission was cut short from 8 to 5 days, Bykovsky holds the endurace record for solo flight in Space.