I would put it a little higher; that is one seriously nice rifle.
Wartime BSA Number 4, sportered by Parker-Hale (and they did a nice job, too), mag converted to 5+1-up-the-pipe. Drilled and tapped by Parker-Hale, with PH bases (you will need PH rings). Proof-marks look very much like 19.5 tons (versus 18.5 normal) which means that it should have been proofed for the Mark 8 Ball, but I don't see the 8-Ball stamp. Nice PH foresight base, too. Barrel has been bobbed a bit, as normal on their better conversions, recrowned very nicely without doubt.
PH did quite a lot of 'budget' conversions and not-so-many nice ones. This is a nice one. The original aperture sights were left on, not because they were cheap, but because when this one was done, scopes still were very much a minority in the field. Besides, aperture sights (good ones, anyway) are a LOT tougher than scopes any old day.
Apart from the facts that it is a .303 and that it is a rebuild to 'new' and that it isn't polished quite as nice as a Remchester, it is the equal of any other rifle that was out there in the field blasting Bambis 50 years ago. Yup, 50 years since it was sold retail.... and look at the condition.
It might not be restorable (and this might be heresy) but this one is a keeper.