I found this at my grandmother's house after she died. Was hoping somebody could help me identify what kind of watch it was--I think it was my grandfather's.

 

If you search for "american time watch" on eBay, you'll see a few dozen watches. Here's one example:

american timePurchases made through these links may earn this site a commission from the eBay Partner Network

They seem to be fairly inexpensive watches, often made with corporate logos as employee giveaways.