30c Orange Red, Perf 10 (476A). Block of four with selvage at left, three stamps Mint N.H., top left stamp single hinge mark, radiant color, tiny tear at extreme edge of selvage at lower left

FINE. AN EXTREMELY RARE AND DESIRABLE BLOCK OF FOUR OF THE RARE 30-CENT PERF 10 WASHINGTON-FRANKLIN ON UNWATERMARKED PAPER.

Despite the P.S.E. claim that a watermark has been "discovered" on one stamp from one of the 476A panes, the vestige of a watermark on the dandy roll used to make unwatermarked paper has been known to philatelists since 1918. The unwatermarked paper supplied to the Bureau for printings of sheets that were perforated gauge 10 and 11 is known to have had "ghost" watermarks where the brass pieces were removed. We currently side with the group of philatelists who believe that the 30c Perf 10 Unwatermarked, Scott 476A, was legitimately issued. The block offered here has selvage that has absolutely no trace of the watermark.

With copy of 1973 P.F. certificate. Scott Retail as singles.

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