I am under the understand that Ingersoll Watch Co. made jeweled pocket watches back in the 1800. But I have not been successful in locating a jewel dating list. I am trying to expand my knowledge in this area. Any idea if such a item exists.
I'm not aware of Ingersoll having made jeweled watches in the 1800s. In the 1890s, they offered both American and Swiss watches in their catalogs including watches by the Trenton Watch Company. The early Ingersoll watches were made by the Waterbury Clock Company, and were basically backwind and backset alarm clock movements in a "pocket watch" case with no jewels. Others might be able to provide additional information, including the possibility of a list of serial numbers.