That's a heavily bubba'd, but early No. 1 Mk III Lee-Enfield made in 1906 by Birmingham Small Arms(BSA. Same guys as the motorcycles, etc).
How long's the barrel? Lot were cut. Should be about 25".
Do not shoot it without first checking the headspace. Thousands of 'em were assembled out of parts bins with zero QC.
The *'s indicate it was a Mk I that has been factory rebuilt to Mk III standards. The stars mean a minor change that isn't enough to warrant another Mark.
The 'ER' under he Crown indicates Edward Rex. As in Edward VII of England. King until 1910.
There's no way of finding specific info on your rifle, especially where it spent any time, but this'll give you some.
http://www.rifleman.org.uk/The_Rifle_Short_Magazine_Lee-Enfield.htm
It is extremely expensive these days to restore any Lee-Enfield to full military configuration. The rear sight protector(wings) runs $5.05 along from Gun parts. Very few whole stock sets either. You'd need about $100 worth of wood alone. Not to mention the hordes of screws you don't have.
Check the headspace and if it's ok(requires a handful of bolt heads at $14.15 each to try with gauges if it's bad.), slug the barrel(they can measure between .311" to .315" and be ok. Commercial factory ammo uses .311" or .312" bullets.) and if it's all ok, you have a rifle that can kill any game you care to hunt. Scope mounts are poor though.