PL.101 (IG CONSTANT VARIETY)(SG8 SPEC BS31f) ON COVER. 1850 envelope Grantham to Bakewell with 1d pl.101 lettered IG, just touched at lower right, tied "321" numeral of Grantham. Back stamped GRANTHAM JU 28 1850. Stamp shows excellent constant variety VERTICAL MARK OUTSIDE NW SQUARE. (Ref 108902).
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