unused 1c-3c Defense, horizontal pairs imperforate between (899a, 900a, 901a), horizontal pairs and blocks of four (each yields two error pairs), most never hinged, one 1c pair (in the block) has tiny thin, also incl. 3c pair and block of four with freak perfs. and two 1c precancelled blocks of ten with freak vertical perfs. generally fine-very fine, nice specialist lot, Scott retail $330.00+