Lot
166 P
1894, 6¢ dull brown, plate proof on card, top margin plate no. "28" block of 6 with imprint, beautiful rich color on bright fresh card, evenly balanced margins, Extremely Fine, we know of at least three plate blocks of this card proof with this being the only top plate block.Scott No. 256P4 $5,500.
AN EXTREMELY RARE PLATE BLOCK OF THE 1894 6¢ BUREAU PLATE PROOF ON CARD.