90c 1861-66 Issue, Proofs and Essays (72-E7, 72P1). Five items, large die proof cut to just outside the die sinkage area, plate proof on card, essays incl. 72-E7f (thinned) and 72-E7g, also No. 72 with small ms. "X" (possible specimen), Fine group, Scott Retail with the No. 72 as used