25c Red T die (RN-T3), imprinted at top left on 1866 North American Italian Steam Ship Company (NY) stock certificate, 8½ x 14", engraved by USBN Co., front in Green & Black with gorgeous central vignette, back in Brown, with all 20 coupons attached, usual light folds, small separation hinge reinforced, very fine, illustrated in Castenholz, extremely rare, believed to be unique, Castenholz $850.00 photo est.