1864 British Post Offices abroad. A single rate cover from Malta to Messina prepaid by a 4d pale red Pl.4 (SG82) tied by a strike of the Malta 'A25' type Z4 duplex for NO.15.1864. Black boxed 'Piroscafi/Postam/Francesi' handstamp at left and a Messina arrival datestamp on reverse for the 20th
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.