5c Dark Blue, Horizontal Pair, Imperforate Between (557b). Errant vertical perfs just touch left edge of left stamp, imperforate sheet margin at right, deep rich color, vertical crease in selvage, light gum crease at top of right stamp

VERY FINE. AN EXTREMELY RARE EXAMPLE OF THE 5-CENT 1922 ISSUE HORIZONTAL PAIR, IMPERFORATE VERTICALLY.

The only other example contained in Power Search was from our 1991 Rarities sale and is similar to this one, though the left vertical perfs cut further in. The Datz book states only ten pairs are recorded. Listed but unpriced in Scott. Given the $2,250.00 Scott Retail value for No. 557a, of which at least 50 are known plus two plate blocks, it is safe to assume that Scott Retail on this pair would be much higher were it priced

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