David Feldman's 22nd Rarities of the World Auction June 6, 2019

– 121 – 60104 C 1923 VLADIVOSTOK airmail set of 16 values, mint, very fine, extremely rare, cert. Mikulski “only 25 complete sets existing”. Aworld-wide rarity Estimate: € 12’000 - 15’000 Russia Romania / Russia