Early Shirley

[Sapper740]

I have a 1941 4 digit serial numbered No.4 MkI B9802 that if I what I know is true is around the 19802nd rifle made by Shirley in WWII. 19801st if there was no B0000. It appears Ishapore got their hands on it at some time as it has the Ishy screw but God bless'em, they only scrubbed the right sight of the butt socket so B 1941 9802 is still visible on the left as is 9802 on the bolt, forestock and magazine. I'm frankly amazed the magazine is still with the rifle.
Unfortunately, the bore is shot out and would need a new barrel to be a shooter. Does being an early four digit Shirley add anything to it's value? If so I will leave it in its near original condition, otherwise I'll look for a Criterion barrel for the rifle.