Others will be along with more knowledge than I about the H.T's
Page 318 of the Lee Enfield by Skennertonlists 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 LithgowSAF (c1913 – c1915)
7 pt star (small) with A inside Later Lithgow SAF (c1915 – c1926)
MAO Rifle Factory No.3 Orange (butt marking)