He was a PT boat commander in WWII and supposedly used this to time patrols.
I did a bit of
- Serial number is 13603717
- Which means it was manufactured in 1904
- It's a Waltham Grade No. 1420, 12 size, #1894 Colonial, 15 jewel movement
- Here's the flyer for the 14k gold case
Turn up the volume.
This video elegantly breaks down the complex workings of a mechanical watch to show how the mechanisms work together to measure time.