The serial number on an American Waltham Watch Company pocket watch is located on the movement of the watch and can be found by removing the back case. Waltham watches were made with four types of back: screw-off, snap-off, hinged and swing-out.Continue Reading
On a hinged case, the back attaches with a hinge. To open it, simply locate the notch at either the 6 o'clock or 9 o'clock position, and open the case back.
Screw-off case backs usually rotate counter-clockwise for removal. Snap-off cases include a notch to insert the edge of a specialized tool to remove the case back.
For a swing-out case, the front bezel and crystal must be removed. Move the watch crown and stem to the position used to set the pocket watch before attempting to swing the movement out to locate the serial number.Learn more about Watches