1c Pan-American, Center Inverted (294a). Block of four, bottom stamps Mint N.H., deep rich colors and proof-like impressions, bottom left stamp single slightly toned perf tip of little consequence

FINE-VERY FINE. A RARE BLOCK OF FOUR OF THE FAMOUS ONE-CENT PAN-AMERICAN INVERT, CONTAINING TWO MINT NEVER-HINGED STAMPS.

The Pan-American inverts were the first bicolored postage stamps produced by the Bureau of Engraving and Printing and the first invert postage errors issued by the Post Office since the 1869's. The 1c Pan-American Inverts were found in several post offices around the country. Thirteen blocks of four, a block of six and a block of 20 are recorded in our Levi records, some of which may have been broken into singles.

From our 1967 and 1976 Rarities of the World sales. With 1967 P.F. certificate. Scott Retail as a block of four with no premium for the two Mint N.H. stamps.

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