Worldwide Air Post Stamps and Postal History, One Man Collection of Tannu Tuva, Philatelic Rarities of the World, Part 2
Lot 658:
Description
1934, Argali and Airplane, two trial color perforated proofs of 25k in red violet and black, affixed over brownish gray cardboard (large Project card cut into pieces), intact perforation, VF and very rare, Est. $1,500-$1,800 , Scott #C5
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