Shield of Pittsburgh Pa. Clear strike cancels 1861 3¢ rose on illustrated Iron City College corner card cover to Sycamore Ill., postmarked "Pittsburgh Pa. Dec. 17" circular datestamp, back of cover sealed with two pieces of selvage with part imprint or plate no. from the 1861 3¢, blue "Due 3" handstamp, Very Fine; with 2003 P.F. certificate. Scott No. 65  Estimate $300 - 400. $0 (Image)