1966: Unissued mini sheet "Soviet Cosmonauts and Space Vehicles"
containing 10 horizontal se-tenant pairs "Jurij Gagarin and
Valentina
1966: Unissued mini sheet "Soviet Cosmonauts and Space Vehicles"
containing 10 horizontal se-tenant pairs "Jurij Gagarin and
Valentina Tereshkova", four empty fields with imprint at base, mint
never hinged. Unlisted in Gibbons or Michel
