Hello, my grandfather gave me three pocketwatches several years ago--a Hamilton 992, a Burlington Special, and a Waltham. As I recall, two are railroad watches. One belonged to my grandfather who worked on the Erie Lackawanna/Erie RR from the 40's until early 70's when he retired. The other belonged to his father who worked on the Pennsylvania RR in the early parts of the 20th century.
The S/N are: Hamilton 1321000 (doesn't run); Burlington 2757708 (runs, but I can't set the hands); Waltham Vanguard 29454600 (runs; second hand is off, but Grampa kept it & I have it)
Any information or research guidance you could provide would be most appreciated. Thank you.