1865 Overseas mail. An entire from London to Buenos Ayres carried 'Pr French Pkt', prepaid at the 1s4d per ½oz rate by a 4d vermilion Pl.7 (SG94) and a 1s Green Pl.4 (Wmk. Emblems, SG101) both tied by Foreign Office 'H' barred cancels. Red Lombard Street/Paid cds below adhesives for OC.23.1865 and a Calais transit cds for the 24th
Buenos Ayres, 1865
Printing Dates
Plate 4 8th December 1864 Plate 5 28th March 1866
Essays and proofs
Imprimatur
Registration Dates
Plate 4 28th November 1864 Plate 5 28th March 1866
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.