1872 5k green, imperforate blocks of 16 (4x4) and 20 (4x5), h.r. or n.h., some creases, mostly between stamps, fine-v.f., rare multiples. These stamps were printed in sheets of 28 (4x7) (Cat No. 2) (Image)

Est.$750

1872 20k gray blue, unused without gum, margins to just touching at right, small thin, otherwise fine, rated "RRR" - only 7 (!) known (Schmidt 7) (Image)

Est.$3,000

1876 20k blue, unused with original gum, margins to just touching at right, small nick and thinning at top, still a fine appearing example of this rarity, rated "RRR" - only 7 (!) known (Schmidt 11) (Image)

Est.$3,000

1876 10k red brown, unused with full original gum, cut close but clear at top and bottom, h.r., creases and small thin, tiny pen speck at bottom, fine, rated "R", only 20 known (Schmidt 10) (Cat No. 11) (Image)

Est.$750