Hi JShaff.
I believe what you have, which is commonly referred to in collectors circles, as a Victorian Era Copy.
During the Victorian period (about 1840 - 1900) early arms were all the rage with decorators throughout much of Europe. Copies of guns, swords, even complete suits of armour were made for decorative purposes. I have seen a number of these Victorian copies over the years. I even own two pistols myself. Most of the guns I've seen utilize a combination of original left over parts, and new made (for then) parts. I've seen two decorated wheellocks using an original lock plate and dog, but with no internal working parts. Many of the guns were made with exaggerated bore sizes - just for "effect". :haha:
I do believe you have one of these pistols made for decorative effect during this period. That's why it looks old, but not that old.
If you like, I can post photos of my two Victorian Era pistols if you like?
Hope this helps. Thanks for posting. Rick. :hatsoff: