Hi, I recently purchased this pocket watch and am interested in learning more about it. The best I can tell, the movement has the name of John Shan, Liverpool engraved on it. The serial number is 1652. The case has a worn golden finish, and the outer case is covered in what I think is tortoiseshell, with a painting on it. It's a fusee movement, and the balance wheel seems to drag. I have attached pictures. I looked up the name and any variations I could think of in "Watchmakers & Clockmakers of the World (Volumes 1 & 2)" but didn't see anything relevant. I also googled it! 
I found a couple of marks stamped inside the inner case, but couldn't find anything about those either.
I would like to learn anything I can about the watchmaker, age and anything else that I can find out. (Good news or bad!)
Thanks!
I found a couple of marks stamped inside the inner case, but couldn't find anything about those either.
I would like to learn anything I can about the watchmaker, age and anything else that I can find out. (Good news or bad!)
Thanks!










