1860 Transatlantic mail. An envelope sent from Mullingar to Brooklyn, New York, United States of America endorsed "Via Galway, Paid" paid by a 1s Green (SG 72, Wmk. Emblems) tied by a crisp Mullingar '345' Irish spoon cancellation for MR.28.1860. with a red New York arrival datestamp at left and a red "5 Cents" credit handstamp below. Backstamped by a Liverpool transit datestamp for MR.29.1860.
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.