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Auction: 16USA - The Frederick R Mayer Collection of Costa Rica
Lot: 202

#J9P-13P, 1915 2c-20c Postage dues, master die proof in green, with value tablets alongside, affixed to large index card with the set of five stamps (bottom sheet-margin copies) handstamped ""Specimen"" in red and with security punch, a couple stamps with faults, fine-very fine; a unique proof of the postage due issue. ex-American Bank Note Company archive Estimate US$ 180-210

Sold for
$475