Gen Zachary Taylor (rare unused version on left also has horizontal print line error in centre) Initial on back (in centre), on rare stamp on left, also has vertical crease
Rare special print paper imperf is in centre on hard brittle paper with perforations trimmed imperf back compared to other common perforation varitities imperf front illuminated from back imperf back illuminated from back
Top: Unused 1851 type 1 with later perforation (with outer frame line visible at bottom of stamp) Bottom above: Used 1851 type II with later British (?) postmark Backs are below: