PL.4 (AK)(SG21) ON COVER/MISSING IMPRIMATUR LETTERING. Fine letter Bristol to Coventry with a superb use die 2 1d pl.4 lettered AK S.C.16 (SG21) tied neat 'BRISTOL/134' sideways duplex JY 18 1855 clear of Queen's profile. MISSING IMPRIMATUR LETTERING, a most attractive usage. (Ref 105893).
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