[Jack Geratic]

Just recently had a sudden interest in this one. According to research from Barry Beldam and his Armoured Acorn site, he shows AoS 46 associated with 3rd 3rd A/T Regt. A different quality but larger image leaves no doubt the marking on the rear is 46. Finally from the the CanadianSoldiers site dealing with vehicle markings, it gives that same marking as AT regiment belonging to divisional troops.