It looks like a Jaeger shotgun piece to me. German, Belgium something like that. I think if you see the exact proof mark shown above then it is definitely Belgium, circa 1870s. They varied their proof mark from time to time, so exact is crucial. Yes we would need to see a sharp focused image of each stamp to tell you more specific information. What I find interesting is the elaborate construction of the stock and trigger guard is not consistent with the plainness of the lock mechanism. I note also some gap between the front edge of the lock mechanism and the inletting of the wood. To me, this implies the locks may not be original to the stock.
Since you describe yourself as a new member, and may therefore possibly be new to guns, you should not be the one to remove the lock yourself. Let a genuine, bonded, gunsmith with the proper size screwdrivers do that for you. No matter what it is, burred or marred screw heads will lower the value instantly. Have him 'mike' the bores too for you. As stated there will probably be a host of more markings inside the lock plate. In the old days, sometimes one shop made the locks, then sold the lock assemblies to a gunsmith who mated them (usually very meticulously) to a stock and barrel. Alternatively, sometimes everything was done in the same place. Sometimes additional maker marks are found somewhere on the stock. There are whole books and websites dedicated to who made what mark and in what year and who did subcontract work for who.
In a perfect (but rare) world everything will have matching marks and you will have something. Sometimes with these pieces one or two pieces get lost or broken. Someone else years or a century later says, 'hey, do you think we can make this trigger guard fit that old stock? What about this old barrel and those locks from China, will they fit?'
Point being if your stock is wood from Germany, the barrel is from Belgium in 1875, but it turns out the locks were sold by Dixie gun works last year, and the trigger guard is from Persia circa 1910, then you may not have much beyond a wall hanger curio. The stamp marks can tell us/you more.
