50c Violet (421). Top plate no. 7057 block of six, five stamps Mint N.H., top center selvage lightly hinged with barest hinging of top center stamp along a few perfs, rich color on bright paper, choice centering throughout, bottom right stamp natural perf disc inclusion

EXTREMELY FINE. A STUNNING PLATE BLOCK OF THE 50-CENT PERF 12 WITH SINGLE-LINE WATERMARK. THIS IS ONE OF THE FINEST EXAMPLES OF THIS EXCEEDINGLY RARE PLATE BLOCK.

As a measure of rarity, the Wampler collection had a hinged top plate block, and the Fogelson collection did not have a Scott 421 plate block (both Shreves sales). Our MLG sale also did not contain one. The only example contained in Power Search after our 1973 Rarities sale is from the left position, offered in 2006.

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