cover 2c Carmine type V offset imperforate, Schermack private perfs. type III (533 var.), average centering, tied by Chicago machine slogan pmk. on 1920 window envelope (cover opened at both sides), also incl. similar 2c Carmine type VII (534B var.) on large portion of 1921 cover front (very scarce on a full cover), fine lot, Scott retail $290.00 est.