Waltham
American Watch Company (Waltham) Grade P.S. Bartlett - 18-Size, Model 1857, 11 Jewels, c.1867, Serial No. 318825. One of the primary resources for identifying Waltham watches is a serial number.
My article exploring Abraham Lincoln's missing Waltham pocket watch has been featured at The American. With my interest in Lincoln and American horology, this was a perfect project to work.
[May 29, 2020] Update: After bringing this research to the attention of Dix Noonan Web, the McLean/Lee watch has been removed from the June 9th auction. Dix Noonan Web Response:.