Nice idea for a thread-
I own an 1868 Swiss Vetterli Rifle. Lusted after one for years. It’s changed a bit- there’s a modern bolt and nut on the inside, and I’ve converted it to center-fire in order to actually shoot it.
The oldest thing I own is a Mosin Nagant rifle, made at the Tula Arms Plant 120 miles south of Moscow, in 1942.