Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2
Lot 948:
1922, 9th Italian Philatelic Congress at Trieste, black overprint on King Victor Emmanuel stamps of 10c-40c, complete set of four used on commemorative postal card, VF, expertized by A. Diena and Raybaudi, Sassone #123-26, C.v. €1,900, Est. $400 -$500, Sc. #142A-D
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