You are correct

Birmingham proofs. There were several Parkers making guns there dating back to the late 1700s Modest quality guns better than the Belgium knockoffs

The Belgium pieces are common enough that the assumption tends to fall that way

So there's nothing specific enough with the markings to tell which Parker made it?

Birmingham proof marks 1868-1875. Unfortunately no maker's mark.

Ok, any opinion on what it would be worth? This isn't one I will be keeping.

I would say its dollar value is less than its sentimental value. Put it on gun broker with those photos and start it at a penny. Someone may buy it for what it’s worth to them.

It has zero sentimental value... :rotf: That would be his tools, which I have.