PL.52 (AK AL) MISSING IMPRIMATUR LETTERINGS (SG40) ON COVER. Envelope (rear flap missing) Weymouth to Cheapside, London with 1d pl.52 rose-red on white paper (SG40) x 2 lettered AK AL tied fine WEYMOUTH/873 duplexes SP 30 62. Both are MISSING IMPRIMATUR LETTERINGS and AK shows constant variety "MARKS LEFT SIDELINE OF A SQUARE". (Ref 111651).
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