Re: Birtish 303 value?
Your No.4 Mark 1* was made by Savage-Stevens in Chicopee Falls, MA (as Doc says) in 1942.
If it doesn't have the (T), the value is:
Exc. - $300
V.G. - $200
Good - $100
If it does have the (T) mark, but not the original scope, it might be worth a bit more, but without the scope, not very much.
Prices are from the Standard Catalog of Military Firearms, 2nd Edition.