re: Since I don't have a mortgage anymore, I got this. Good Investment?

Well I can think of a lot of things I'd rather spend 115K on than a gun that only a handful of people are going to know enough about to admire (and let's not kid ourselves, that's why we buy shite like that), but it's your money homey.

Congrats on the collector's item.

ETA: To your original question, I don't know enough about collecting guns to know the potential return, but as a rule Americans need to stop buying vanity items that they simply want and then asking (after the fact) if it's a good investment. This gun may or may not appreciate, but there were/are tons of better places you could have dropped 115K if you were really interested in a strong return.