Lot 2146
S 
Envelope, 1887, 1¢ blue on blue, Specimen (U299S), entire, size B with vertical overprint U.P.S.S. #893, S.F. 38, Armour & Co. printed corner card, fresh paper for this exceeding rare issue of which only about five mint entires are believed to exist (Scot $3,000), Extremely Fine, probably unique as a Specimen.
Estimate 25,000 - 30,000
Provenance: Sheriff, Wampler, Floyd
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