15c Bright Orange (152).
Original gum, lightly hinged, bright color on fresh paper, Very Fine, a
challenging issue with original gum, with 2002 P.F. certificate (Image) 
15c Bright Orange (152).
Disturbed original gum, deep shade, faint offset of grill points on gum,
Fine, an unusual item which may be explained by the following scenario --
if multiple sheets were placed in the grilling apparatus but not enough
force was generated, then the bottom sheet(s) would not be grilled and the
individual sheet just below the last grilled sheet may acquire an offset
impression -- with 2001 P.F. certificate
(Image) 
24c Purple (153).
Original gum, lightly hinged, rich color and choice
centeringEXTREMELY FINE. A SUPERB ORIGINAL-GUM EXAMPLE OF THE 1870 24-CENT NATIONAL BANK NOTE ISSUE.
With 1992 P.F. certificate (Image)
24c Purple (153).
Original gum, brilliant color on bright paper, Very Fine and choice, with
1993 P.F. certificate (Image) 
24c Purple (153). Large
part original gum, well-centered on fresh paper, Very Fine, a scarce stamp
in sound original-gum condition, with 2002 P.F. certificate (Image) 
24c Purple (153).
Original gum, deep rich color and detailed impression, Very Fine and
choice, with 1983 P.F. certificate (Image)
24c Purple (153). Unused
(no gum), bright color, wide margins, Very Fine and choice, with 2002 P.F.
certificate (Image)
24c Purple (153). Block
of four with wide selvage at bottom, each with tiny ms. "X" cancel and
retains small part original gum, rich color, well-centered, faint toning
and rejoined perfs, still Extremely Fine, an extremely rare block (Image) 
30c Black (154). Unused
(regummed), perfectly centered, soft charcoal shade on crisp paper,
Extremely Fine, an elusive issue in sound unused condition (Image) 
30c Black (154).
Disturbed part original gum, soft charcoal shade, Fine, a scarce issue with
original gum (Image) 
90c Carmine (155). Right
sheet margin single, original gum, lightly hinged, beautiful rich color and
detailed impression, choice centeringEXTREMELY FINE. THE 1870 90-CENT NATIONAL BANK NOTE ISSUE IS RARE IN CHOICE ORIGINAL-GUM CONDITION.
The 1870 90c National Ungrilled Issue, Scott 155, is somewhat overshadowed by its grilled counterpart, Scott 144. Collectors are also misled by the availability of Scott 166, the 90c 1873 Continental. Although the difference in shades is distinct, collectors have a tendency to confuse the two and under-rate the 1870 National printing. Only a few original-gum examples of Scott 155 have the centering, color and freshness of the stamp offered here.
With copy of 1983 P.F. certificate for block of six, this being the bottom right stamp (Image)