POST-CLASSIC PERIOD MAJOR USA RARITY 1914 COMPOUND PERFORATION 5c Blue, perf. 12X10, fresh deep shade and lightly cancelled, natural straight edge at top (top of the sheet), fine with just vertical crease and two small tone spots mentioned for accuracy, of little significance for this great US rarity of which only 25 used examples are recorded, all used. cert. PSE and PF (Scott $20'000) An extremely rare stamp, missing in most of the even very advanced collections. (Image)