3c Black, Trial Color Plate Proofs, Double Paper (65TC).
Four proofs, including two examples of the scarce Charles F. Steel Essay from patent no. 86952 of Feb. 16, 1869, consisting of white tissue paper backed with white wove paper, first is perforated, original gum, circle of wedges cancel, other is pink tissue paper on white wove, large margins, both Very Fine and rare, the other two proofs are imperforate in Black, including on thick bluish chemical paper and white wove, both with the same or similar cancel to the first item, large margins, the bluish chemical paper with some moisture at bottom on back that transforms it to white, Very Fine, a fascinating group and among the rarest of the 65TC's
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