I don’t wear a wristwatch, but I do have a weak spot for tuna sandwiches, preferably on sourdough, with a squeeze of fresh Meyer lemon and a thick slice of tomato. Mmmm.

So I guess might wear this timepiece, posted a few days ago on Show & Tell by silveruser, who wants to know the age and value of this charming advertising wristwatch. After some amateur sleuthing, here’s what I found out.

This watch is probably from 1973 (I can’t make out the date just to the right of the 7, but that’s the date it was made). StarKist Tuna, which launched its Sorry Charlie campaign in 1961, actually made several “Sorry Charlie” wristwatches in the 1970s, beginning, I believe, with one in 1971, in which Charlie is on the right side of the dial and the sign on the hook is on the left. This watch has a calendar in it, which appears to date it to 1973. A wristwatch like this one, in better shape, can be had for about 25 bucks.

Like a lot of people on Show & Tell, silveruser flagged this post as an “Unsolved Mystery.” If you think you can solve someone’s mystery, just leave comment at the bottom of their Show & Tell.