1856 1D PINK ENVELOPE REGISTERED MAIL UPRATED 6D EMBOSSED (SG58) LONDON USAGE. A good 1d pink envelope used locally in London with cut-into 6d embossed (SG 58), paying 1d postage and 6d registration tied London District numerals. On front 'Registered' manuscript and very fine 'St. James' St' receiver in blue. Back stamped MR/4/1856. Very scarce registered usage of the 1d pink. (Ref 59938).