PL.180 (MI)(SG17) PUNCH HOLDER FLAW ON COVER. 1854 envelope Thetford to Magdalen College, Cambridge with a very fine die 1 1d pl.180 S.C.16 (SG17) lettered MI tied neat '790' numeral of Thetford clear of Queen's profile and also clear of EXCELLENT CONSTANT VARIETY 'PUNCH HOLDER FLAW UNDER M SQUARE'. Variety unlisted by SG but present on imprimatur sheet and listed by Brown Fisher. (Ref 101164).
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