Lot
340 
Envelope, 1893, 1¢ Columbian, Trial Color Proofs, group of three size 11 entires (159 x 94mm) comprising green, black and unlisted red violet; each with trivial adhesive at left edge only, Very Fine and rare group, ex-Barkhausen (backstamp). Scott No. U348TC. Undersander No. E94B $2,700.
The dies show the Meridian at back of Columbus' head and do not show a period after "Cent".
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Realized: $3,750