1966 Timex 21 Self-Wind

I was searching for a 1966 Timex Marlin as a companion to a couple of reissues that I have, when I stumbled onto this '66 21. The more I read about these watches and their place in the Timex line-up, the more I was convinced that I wanted it, so it's on the way now. 🤩
Hopefully, it performs as well as the seller described.