1871 UNDERPAID MAIL LONDON TO LIVERPOOL/PL.135 (SG43) (OC). Envelope London to Liverpool with 1d pl.135 (SG43) lettered OC, corner fault, tied LONDON-S.W duplex MR 7 71, postage underpaid with fine strike "2d" charge mark and circular "MORE TO PAY/A/ABOVE ½OZ" instructional. Unusual. (Ref 103215).
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