15c Black, E. Grill (91).
Original gum, lightly hinged, clearly-defined grill, intense
shadeVERY FINE. A SCARCE SOUND ORIGINAL-GUM EXAMPLE OF THE 1868 15-CENT E GRILL.
With 1988 and 2000 P.F. certificates (Image)
1c Blue, F. Grill (92).
Intense shade, well-balanced margins, bold cancel, fresh and Extremely Fine
(Image) 
3c Red, F. Grill (94).
Original gum, barely hinged, sharp grill, intense color, Very Fine and
choice, with 1995 P.F. certificate (Image) 
5c Brown, F. Grill (95).
Original gum, lightly hinged, unusually clear grill, deep rich
colorVERY FINE AND CHOICE ORIGINAL-GUM EXAMPLE OF THE 1868 5-CENT F GRILL.
With 1992 and 2003 P.F. certificates (Image)
10c Green, F. Grill (96
var). Original gum, deep rich color and strong grillFRESH AND VERY FINE ORIGINAL-GUM EXAMPLE OF THE 1868 10-CENT F GRILL.
Ex Weisman. With 1990 P.S.E. and with 1989 and 2003 P.F. certificates (Image)
12c Black, F. Grill (97).
Original gum, lightly hinged, bright shade, choice centering with
well-balanced marginsEXTREMELY FINE ORIGINAL-GUM EXAMPLE OF THE 1868 12-CENT F GRILL.
With 1984 and 1999 P.F. certificates (Image)
15c Black, F. Grill (98).
Original gum, lightly hinged, sharp proof-like impression, unusually wide
margins for this difficult issueEXTREMELY FINE. A SUPERB WIDE-MARGINED ORIGINAL-GUM EXAMPLE OF THE 1868 15-CENT F GRILL.
With 2001 P.F. certificate (Image)
24c Gray Lilac, F. Grill
(99). Original gum, clearly-defined grill, rich color and detailed
impressionEXTREMELY FINE ORIGINAL-GUM EXAMPLE OF THE 1868 24-CENT F GRILL.
The higher-denomination F Grills were produced in limited quantities and so this is one of the most difficult of the grilled issues to find in sound condition with Very Fine or Extremely Fine centering.
With 1998 P.S.E. and 1999 P.F. certificates (Image)
90c Blue, F. Grill (101).
Deep rich color, clear grill, unobtrusive cancel, tiny tear at top left,
appears Very Fine, with 1985 and 2003 P.F. certificates, the former not
mentioning the tear (Image)