Oh wise and wondrous watch gurus....
I have a Timex T49878: https://www.amazon.ca/Timex-T49878-Expedition-Military-Field/dp/B006KY5V0O
It has sentimental value and I am trying to get it working again.
Specs:
Caliber: M905
Linge Size: 13½
Thickness (MM): 3.65mm
Hand Size: 120/70/20
Stem: 401-2017
Cell/Battery/Power Source: 2016
Tap Size: 10
Includes: Protective Case, Stem, and Power source.
Other Information: INDIGLO
I managed to find a new stem (401-2017