Lot
4212 
1891, 1¢ Blue on Grayish White, Double Impression, One Inverted, Mint card, first impression normal and second intense impression inverted; light top right corner bend, Very Fine. Scott No. UX11b $9,000.
ONE OF ONLY THREE RECORDED EXAMPLES OF THE 1891 1¢ BLUE POSTAL CARD DOUBLE IMPRESSION ERROR, ALL ARE MINT.
Realized: $3,500