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

Imperial Russia

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Start price: $500

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1917, World War I Propaganda Forgery of money stamps, 20k olive green and 15k orange brown, set of two stamps, inscriptions on reverse reads: 20k – ”In circulation on a par with bankruptcy of silver coins”, 15k – ”In circulation on a par with robbery and cheating rulers”, unused without gum as produced, VF and very rare, Est. $800-$1,000, Sc. #106-07