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Auction: 16USA - The Frederick R Mayer Collection of Costa Rica
Lot: 224

#4b, 16a, 1885 1c Green, overprinted in black and red, unused block of eight (2x4), being positions 5-6/35-36, with the top four stamps being Type I (#4b), while the bottom four stamps are Type III (#16a), in addition the top left stamp (position 5 on the sheet) has the ""Gnanacaste"" error, which is not listed on the scarce #4b, fine-very fine; an exceptionally rare and possibly unique combination block; the catalog value as just singles stamps (counting the error as the normal) is $2,200 Estimate US$ 1,000-1,200

Sold for
$1,600