Others will be along with more knowledge than I about the H.T's

Page 318 of the Lee Enfield by Skennertonicon lists this rifle as Date to store ~ 06.12.1944 Type of mount = M (Medium bracket has to do with the height of it) so the rifle is the real deal however if I am correct they do say however the scope is mismatched (From what I gather in the add).

SAF = Small Arms Factory

7 pt star (large) with A inside Early Lithgowicon SAF (c1913 – c1915)

7 pt star (small) with A inside Later Lithgow SAF (c1915 – c1926)

MAO Rifle Factory No.3 Orange (butt marking)