Canada 1943 WWII Y-Force Jamaica Private Soldier’s Handstamp Military Cover

Cover franked with 6d KGVI Pictorial, tied by Kingston machine cancel (8 Jan), to Hamilton, Y Force No. 2 censor handstamp, backstamped with private sender's handstamp "Hon. Major P.J. Dykes / Serial 300 / 'Y" Force / Canadian Army Overseas", the name crossed-out and "Lieutenant Jc.R. Harstone" witten overtop, perhaps the only re-named example extant, vertical filing fold, a scarce and unusual soldier's handstamp, and a rare example from the Argyll & Sutherland Highlanders posted in 1943, noted by Ed Richardson in BNA Topics Vol 41, No 5.