I figured I'd pass some info along.
Definitely Belgian. The most widespread manufacturer of "Wall Hangers" and "Mantle Magnets" Haha!
The dead giveaway is the grip being capped and spired as it is. The floral script is an added confirmation. If I had to guess, based only on the pictures at hand...1825-1845.
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"Damas Fin" is one of the "rarer" metallurgical proof inscriptions, but even it is still very common on examples.
("Damas Turc" or "Damas Turc Fin" being the most prevalent.)
The "Damas" markings were NOT strictly Belgian, so I will eliminate the other "Damas" proof users below with reasoning.
- If it was English, it would either be Tower-manufactured and have the royal crown, or it would have been privately commissioned by the individual/family/presenter and would VERY prominently display the smith's name, often with a city or even street name following.
- If it was German, 90% of the percussion pieces I have dealt with displayed hunting or wild game scenes/engraving. Very elegant, firearms and hunting were more of a "gentleman" associated sport/hobby. Also, German pieces always have stamped proofs.
- I've never seen an unmarked French percussion piece. I doubt they exist. You can also rule French manufacture out due to the economy at the time of this pistols' probable manufacture. France was the king of plain-jane walnut stocks, with lock plates blank except for proof stamps.
- Italian - you'd know it If it was. It'd have "Italia" stamped in probably two or three places, and/or identified by an arsenal property proof.
- Lastly, American.
American earlier-manufactured flintlock and percussion pieces are notorious for being unmarked. Think "garage gunsmith". HOWEVER, productions were often rude and crude, and didn't display a whole lot of ornate craftsmanship or fine detail. Also, the full length stock is not too consistent with American percussion pieces of the era.
I hope this provided some insight, and thank you for the opportunity to talk about firearms!