Welcome. Might be polite to either have a name in your postings or in your profile.
I combined the two postings, as I thought it might make it easier to help you.
Pictures would help a lot, as you haven't given us much information to help you.
Give us info" Serial number? Proofs on the right, etc.
Right now, we can say you have a 1941 mauser (byf is the code)...