3c Experimental Orange Brown, Ty. II (11A var). Positions 1-2/11-12L1L, top sheet margin block of four, unused (no gum), beautiful vivid color, margins other sides clear to in at lower right, light corner crease bottom left, light horizontal crease between the two rows

FINE-VERY FINE APPEARANCE. AN EXTREMELY RARE UNUSED BLOCK OF THE PLATE 1 LATE EXPERIMENTAL ORANGE BROWN SHADE.

A review using Power Search found only a single unused example of this shade, from the 1993 Piller sale. This is the only block, either used or unused, that we have encountered.

Accompanied by a 1987 letter and note from Dr. Amonette confirming the color and position and stating "your block of Exp. OB is unique as far as I am concerned." Unlisted in Scott Catalogue as a block, listed but unpriced as unused single

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