2c Carmine, Cap on "2" (220a,
220c). Block of four, the left stamps with single Cap over left "2",
the right stamps with Cap over both "2"'s, original gum, top stamps h.r.,
bottom stamps Mint N.H., incredibly rich color and well-centeredVERY FINE-EXTREMELY FINE. AN INCREDIBLY RARE COMBINATION BLOCK SHOWING BOTH VARIETIES OF CAP OVER "2". A HIGHLY EXHIBITABLE ITEM -- THE LOWER RIGHT STAMP COULD WELL BE THE FINEST EXAMPLE OF THIS VARIETY EXTANT.
With 1997 P.F. certificate. Scott Retail as singles (meaningless for an item of this rarity) (Image)
1c-$5.00 Columbian
(230-245). Complete set, 1c-4c, 10c-$4.00 original gum, 5c-8c, $5.00
unused (regummed), 10c, 30c, $2.00, $4.00 disturbed gum, few with small
faults, Fine-Very Fine appearance (Image) 
4c Columbian, Error of Color
(233a). Original gum, lightly hinged, the more intense of the two error
shades, fresh and bright paper, well-centered with wide marginsVERY FINE AND CHOICE. AN OUTSTANDING EXAMPLE OF THE RARE 4-CENT COLUMBIAN ERROR OF COLOR.
The 4c Columbian color error was caused by the use of a wrong batch of ink. It has been noted in the past that the color matches that of the 1c, but in fact the true color error is an even darker shade.
With 1961 and 1980 P.F. certificates (Image)