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Auction: 16USA - The Frederick R Mayer Collection of Costa Rica
Lot: 184

#C31P-38P, 1937-38 1c-1.40Col Exhibition air posts, production file, five stamp size artist´s photographic and handpainted models affixed to a thick card, the 1c and 5c being in an unadopted design, card with ms. notations, also a set of large die proofs initialed and approved, generally fine-very fine; ex-American Bank Note Company archives. Estimate US$ 400-475

Sold for
$1,050