My passion at the moment is Flare / Signal guns. And yes, I have a few # 1 examples including 1882 U.S. Navy swingbarrel flare gun, A swiss ( Actually #101 which is the 1st of that model ) flaregun, Unnumbered flaregun Prototypes, single digits, etc.Do you have any other number ones? It's an interesting niche in gun collecting.
I also have an 1875 Remington Revolver serial #1 etc. Bought from Arnie Chernoff before he passed, if you know of him.
I sold a slug of my guns when I moved to Florida about 18 years ago, and I have been slowly selling the rest of my collection starting about 2 years ago so about half are gone.