16 December 2021: My IBM Model M keyboard is 30 years old
I have a lot of keyboards, but my daily driver is this IBM Model M that I have been using for more than 20 years. It was already a decade old when I acquired it, but it still works just as well (now that it is 30 years old) as when I got it. It is still the best keyboard that I have, although part of that is due to deeply ingrained muscle memory preventing me from regarding any other keyboard as a viable alternative.
In addition to this IBM Model M, I also have one with a blue logo that (I'm pretty sure) I bought from @clickykeyboards to serve as a backup in case something ever happens to my main one. I bought that spare long enough ago that it cost significantly less than what they sell for now. It occurs to me I don't know when that one was made. Possibly it is even older than the one I'm typing on to write this post.