Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 2

The One Man Collection of Czechoslovakia - Hradcany Issue

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Start price: $100

Buyer's premium:

1918, 30h dark violet, imperforate single of type I, full OG, NH, VF, several experts’ hs on reverse, C.v. $150 as hinged, Pofis #13Na, CZK5,500, Scott #47e