How can find out where an old artilary shell came from by using numbers on the bottom?

I have a 105 M.M shell made in 1941.How can i find where it was made and what ship it may have been on.How can find out where an old artilary shell came from by using numbers on the bottom?
I don't know the answer, perhaps someone in the quarter master corps could answer your question. I do know this: If the shell is not expended, (shot), do not handle it. Call your fire department, and let them dispose of it. Old ammunition can have a very unstable primer, and could detonate for no apparent reason.How can find out where an old artilary shell came from by using numbers on the bottom?
I do hope this is a shell case, not really a shell...





If not, run out of the house NOW and call bomb disposal...