12c Black, E. Grill (90).
Unused (no gum), sharp impression on bright fresh paper, Very Fine and
difficult to obtain in sound unused condition, with 1993 P.S.E. certificate
(Image)
12c Black, E. Grill (90).
Part original gum, crisp impression, well-defined grill, Fine and scarce
with original gum (Image)
12c Black, E. Grill (90).
Unusually wide margins, sharp impression, clear grill points, neat town
datestamp and light strike of cork cancel, choice Very Fine, a large stamp,
with 2000 P.F. certificate (Image) 
15c Black, E. Grill (91).
Unused (no gum), proof-like impression and well-defined grillVERY FINE AND ATTRACTIVE UNUSED EXAMPLE OF THE 1868 15-CENT E GRILL.
With 1969 P.F. certificate (Image)
15c Black, E. Grill (91).
Well-centered, sharp grill, single nibbed perf at top, otherwise Extremely
Fine (Image)