Unknown smoothbore caplock. European proofs.

[wstiles1]

Good evening folks. I was hoping for some help identifying this old musket. It appears to be Civil War era, but there is no maker's name that I can find. It looks like there are some European proofs but I can't identify them online. I have a book coming but it's a couple weeks out. I'm leaning towards a Belgian import like a Piedmont, but I'm unsure. Any help would be appreciated.

 

[Loyalist Dave]

Um... I'm going to say that looks like one of those 1842 Augustin (Austrian) tube-lock muskets that were converted to caplock and then sold for the American Civil War (ACW).

LD

 

[Grayrock Volunteer]

It's a Prussian M1809/12 UM, or as more commonly referred to in the US a M1809/39 or Potsdam musket. The 1844D on the barrel is the year of percussion alteration and letter code for the Danzig Arsenal.

 

[wstiles1]

I appreciate the responses. Grayrock, do you have any reference websites that I can further research? Or any further info on the markings? I really appreciate your effort.