Ben,
Not sure if you know how to check to see if your rifle is still loaded? If you put the original rammer down the bore, it should go most of the way down and only stick out from the bore a very little bit. If it sticks out a couple of inches, there is a good chance it is still loaded.
I do not know anyone in your area who would be a good person to recommend for doing an evaluation and value estimate. What I would suggest is you contact the Ohio Gun Collectors Association Business Office and ask them for a recommendation for someone in your area. This is a highly prestigious organization in the Gun Collecting Community and if they can’t help, perhaps they can give you another lead.
http://www.ogca.com/contact_us.htm
Speaking of the quality of Interchangeable parts on these rifles, I have an interesting story from late 1995/early 96. I went to the U.S. International Team Try Outs for the first time as the new Team Armourer. Some of the shooters had known me from years of working at the NSSA Spring and Fall National Championships and others did not know me at all, depending on their shooting discipline.
One shooter who had at least seen me for many years at the NSSA shoots, had gotten a patch stuck in the bore of his original M1841 Rifle. He did not have anything to retrieve the patch, so he came up to me to see if I did. I asked if the rammer in his rifle was original? He said he was pretty sure it was. I collected original gun tools in those days, so I pulled out an original Worm for that rifle. I told him if his rammer was original, it would screw right on and he could use it to remove the patch. He looked at me with some disbelief because machine threads in those days were often quite different than modern threads and often very different from each other. I grinned and again suggested he try it. Sure enough the Worm screwed right on correctly and he quickly got the stuck patch out of his bore.
When he brought the Worm back, he told me he had not believed it would work. I reminded him the M1841 was built on the Interchangeable parts system and that is how I knew the Worm would work. He shook his head and said he should have thought about that.
Gus