Official Seal - Registry, 1872, green, double impression, one inverted, second impression faint as always, light town and quartered cork cancels, light wrinkles and small corner flaw at bottom left, Very Fine appearance, a great rarity and grossly undercataloged in Scott; with 1985 P.F. certificate. Scott No. OXF1g  $450. THE DISCOVERY COPY OF THE 1872 REGISTRY SEAL DOUBLE IMPRESSION WITH ONE INVERTED - WITH ONLY TWO EXAMPLES RECORDED TO DATE. $0 (Image)