Just found this on Gunbroker:

Enfield No. 4 Mk1 (T) British Sniping Rifle 303 S-51 - Curios Relics at GunBroker.com : 854570551

Mis-matched pair; British No4T (less telescope) with a Canadianicon scope/mount. Serial number on mount 90L8296 and scope number 269-C. Even has matching scope case.