Lot 2107
 
Envelope, 1907, 5¢ black on blue, die 1, color error (U418d), entire, size 10, knife 57, watermark 15, unused, bright colors, stain spot, otherwise fresh and Very Fine and exceedingly rare.
Scott $6,500
A RARE EXAMPLE OF THE DIE 1 5¢ BLUE ON BLUE ENTIRE ERROR.
It is believed that only about a half-dozen examples of this error entire exist.
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| Realized $2,300 |
