Jam
Posted October 2, 2018 - 12:16pm
I agree with Bulova Timer as the instruction manuals provided with these usually list it that way. You can see it here at the link below. Most of the time on these stopwatches that I have seen if you can remove the case back there is a date sticker on the inner caseback that shows the month and year it was made. I agree with this being dated to the early 70s. These typically run on Valjoux 57 movements and I believe they have been made by Heuer for Bulova.
http://watch-time.de/en/types/timer-517/watch/bulova-timer-6926