6, 1859 20c Blue, stone B, block of 18 from the upper right corner of the sheet of 60, positions 6-11/17-22/28-33, sheet margins on two sides, original gum, exceptionally possessing two dry embossed seals, one in position 33 and the other partly exhibited in the right sheet margin, this being a unique characteristic in the paper used to print Colombian classic stamps, couple of vertical creases and thin spot just barely impinging on one adhesive, fine and scarce; signed Brun.
6, 1859 20c Blue, stone B, block of 18 from the upper right corner of the sheet of 60, positions 6-11/17-22/28-33, sheet margins on two sides, original gum, exceptionally possessing two dry embossed seals, one in position 33 and the other partly exhibited in the right sheet margin, this being a unique characteristic in the paper used to print Colombian classic stamps, couple of vertical creases and thin spot just barely impinging on one adhesive, fine and scarce; signed Brun.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
