1872 wrapper sent from London to Pernau, Russia (Modern day Estonia) bearing a 6d Chestnut (SG 122a) Pl.11 lettered BB tied by a crisp London E.C. "100" duplex for AU.2.1872 with a red "PD" handstamp at lower right and a red "FRANCO" handstamps at left. Backstamped with a Riga transit datestamp
Die proof printed in deep brown on white glazed card cut down to 38x38mm
Panes
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.