"Fence" Grid, three strikes of fancy cancel tie 1¢ blue (63) strip of three on orange buff cover to Springfield Oh., matching "Mason Ohio Jul 30" cds; right stamp with upper right faulty, otherwise Very Fine; with 2010 P.F. certificate. Skinner-Eno No. SD-G 84  Estimate $300 - 400. Skinner notes this fancy cancel as a stylized picket fence grid cancel, although the Philatelic Foundation declines to characterize them. $0 (Image)