My questions have to do with the movement and the back case. Please send suggestions and corrections to the webmaster. Note that the numbers on any part of the watch case, such as a serial number on the inside of the back cover, is a number that goes with the watch case only, and reveals nothing about the watch movement. High volume watches will tend to be closer to the date listed, while expensive, high quality watches will tend to be the ones that have misleading dates.
A Quick History of the Elgin National Watch Company
With only a few exceptions, the watch companies and watch case companies were completely unrelated business. These weights are moved toward the inner end of the arms to speed the watch up, and toward the outer ends to slow it down. If you have one of these, check here for more information.