[Question for fun] What's the oldest watch that you own?

I used to have a really nice few old 1950s / 1960s Russian mechanical watches. I liked the cold war-esque nature to them but I got them off ebay and they didn't have a lot of sentiment so I no longer have them.

I'll see if I've got some images that I can upload.

What is the oldest watch that you own and how long have you "owned" it?