Imperforate Between or Vertically, Errors. Four items, No. 499b, lightly hinged, centered to one side as are virtually all known examples, Very Fine, scarce, No. 734a, h.r., natural gum crease, small thin spot, Fine appearance, with copy of 1981 P.F. certificate for block, No. 805b, Mint N.H., in pair with normal and with bottom right corner selvage, Very Fine and choice, No. 1138a, Mint N.H. vertical strip of three, showing blind perfs at bottom, Fine, also incl. No. 632 which appears to be 632b but with two blind perfs, with 2013 P.F. certificate

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