1874 double rate wrapper from London to Paris prepaid by a 6d grey Pl.12, tied by a London '89' duplex for MR.20,1874. Paris receiving cds on reverse for the following day
Printing Dates
Plate 12 April 1873 - 10th October 1973 EDU 8/10/73
Wing margin stamps come from the center part of the sheet. In the pane shown above the left column of stamps have wing margins, There is no such thing as a straight edge perforated stamp in GB stamps.