Sorry Peter, I was viewing this and trying to text the posts on my Iphone....doesn't work to well as I now see that the watch is a 17j. I'm looking at the 1987 "Befinning to End" pocket watch guide by Ehrhardt and Meggers....the model 5, Seth Thomas is dead bang for your movement, but the price guide lists the 17j movement as tu-tone. If you don't have it and can get it at a decent price it might be worth picking up. I don't know if I am alowed to give any prices here, even though it would be a 1987 price.
Mike
Posts: 206 | Location: West Virginia in the USA | Registered: November 11, 2012
Peter, it has been my observation that a large number of the Two-Tone FULL plate Seth Thomas movements that have gone through my collection and across my bench have been in the 22x,xxx-23x,xxx range as is yours. I suggest that your movement was a Two-Tone and the Gold plate has been lost in the past acid cleanings it suffered. I say that because all my Seth stuff says your watch SHOULD BE a two tone.
Posts: 6492 | Location: Southern California in the USA | Registered: July 19, 2007