1856 COMBINATION OF 1D IMPERFORATE (SG8) AND 1D PERFORATE (SG17). Envelope used locally in London with a four margined imperforate pl.172 lettered TL - missing imprimatur lettering (creased) with 1d star pl.173 in state II (trimmed perfs at top). Stamps tied London "78" duplex MR.8.56. Despite faults an attractive example of this rare combination. (Ref 71753).