Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3

Soviet Union Stamps of 1941-91

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Start price: $750

Buyer's premium:

1964, Conquest of Space, 10k x6 multi, souvenir sheet of six on ordinary paper, light blue color (text at right – ”1964. Pochta USSR”) with clear double impression, full OG, NH, VF and rare unrecorded error, a common sheet is included for comparison, Raritan Stamps guarantee, Est. $1,200-$1,500, Sc. #2930 var