PL.12 (NH CONSTANT VARIETY)(SG24) ON COVER. Letter London to Aberystwith with good used die 2 1d pl.12 lettered NH S.C.14, several short perfs at foot, tied fine London "23" Inland numeral. Stamp shows constant variety MARKS IN N SQUARE (Spec C3h). Back stamped ABERYSTWITH JY 19 1855. (Ref 106117).
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