Thank you for the warm welcome. Let's see if I can't answer some of your questions. Yes, I am the guy with the Civil War sword lol.
History of the musket (as well as one other musket and the sword). My father owned a commercial heating and air conditioning company. He did some work for a man as a favor (the guy couldn't pay, but desperately needed the work done. My father was admiring the guns and sword, so the gentleman gave them to him as payment. Evidently he had no idea of what he had (he had some idea about the sword) except that they were old.
My father had no idea either, but mounted them above an old fashioned mantle/fireplace he built. While at the armory, I recognized the model, and saw that it was similar to the 1805 Springfield. I made notes about the markings of the gun after doing some research at the armory. Looking at the stamp, I learned that the first year the armory made the gun, it had a very unique stamp, with the Springfield label curving on top of the stamp. This was very unique on this gun. Sure enough, the stamp is curved.
The gun had been modified to a percussion model from the original flintlock. This was very common. Forget how much it weighs, but it isn't exactly light!
Someone asked about the armory, and is it worth the trip. If you are interested in the history of weapons manufacturing by the US govt. then this is THE place to go. You will see not only all the weapons made at the armory, but a lot of other historical weapons as well. It is quite a neat place to visit. When I have time, and my teaching duties permit (I teach at the college that is on the grounds) I find myself hanging out at the armory. The armory made the very first weapons manufactured by the US government right up to the M-16 currently used by our military. If you like this kind of stuff, you will enjoy your visit here. I work in many of the buildings that once made up the armory, and some of the features are neat (gun hanging racks still in the buildings etc.).
I would love to do some MDing on the grounds, but it is a federal park and a historical landmark.
RR
If you come home, I can show you what Country junk looks like? 
