Keyhole, of Pottsville, Pa., bold strike on 1870, 24¢ purple, rich color; minute unnoticeable tear at top left, Fine and rare cancel., This is the only recorded strike on the 24¢ value. There is only one recorded cover bearing this cancel dated August 1, 1871.; with 2011 P.F. certificate. Scott No. 153. Whitfield No. 1116  Estimate $500 - 750. $0 (Image)