1c Green, 2c Carmine imperforates, Schermack private vending machine perforations type I with eight holes (343, 344), used guide line pairs, each has c.d.s. cancel, former has faults, otherwise fine-very fine, guide line pairs are very scarce, used they become extraordinary rarities (1c listed only as used single, the 2c is not listed used in any form), both signed Mekeel's, unpriced in Scott, if priced as unused Scott retail would be $865.00+ (the 1c is priced as an unused pair, but not as a guide line pair) photo ex