Canal Zone, 1921, 1c light green & black (Scott 55var), extreme misperforation, corner margin block of 4 with green and black design numbers, o.g., stamps never hinged, hinged in selvage only, striking variety, fresh and bright, desirable position block of scarce variety, Very Fine, only 100 reportedly sold. CZSG 55.1. Suggested Bid $350-500 (Image)