Vostok KNIGA complete signed set incl. Gagarin – COA

Vostok KNIGA complete hand-signed set of 6 covers signed by :

• Yuri Gagarin
• Gherman Titov
• Andrijan Nikolaev
• Pavel Popovitch
• Valentina Tereshkova
• Valery Bykovsky

These were officially signed for KNIGA, the Russian agency for foreign trades at that time and represent the only "commercial" signing Gagarin ever did.

Covers postmarked at that date only exist signed giving extra security !

The set comes with 4 original KNIGA COAs and a color copy of the original COA for all 6 covers. VERY RARELY SEEN!