Re: Another Enfield ?
I suggest showing it to an experienced gunsmith who can advise you as to caliber and if it's safe to fire or not.
Those rifles which went throug rebuild programs might have parts from various manufacturers in them but all of the numbers will match. Esp. the bold and action. Rifles rebuilt in the UK are often marked "FTR" along with two digits for the year. FTR stands for Factory Thorough Repair.