Two today, actually. My 60 year old Tissot PR516 self winder with date, on a stainless steel Tissot sport bracelet which is a witch to fasten. And my 135 year old Stewart Dawson, Liverpool, sterling silver key winder on its 66 gram (more than two Troy ounces) sterling silver Waldemar chain. Got the Dawson with the chain for free, but as usual, quite a bit of “sweat equity” invested in it, over three sessions on my bench to bring it to where you see it. This is the best running 19th century English pocket watch I have ever seen.