Lot 2147
 
Envelope, 1907, 5¢ blue, die 1 on blue error (U418d), mint entire, size 10, U.P.S.S. #2003, strong embossing, fresh paper, stuck backflap as are most, Very Fine, an exceeding rare and under catalogued entire error as only seven are reportedly known.
Scott $6,500
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| Realized $3,750 |
