Hi I have a bulova single button chronograph in 10k gold with box I have no idea about the watch which I have had for a few years would like to know a value or to sell
Hello Bentleycharlie, welcome to myBulova. We cannot provide appraisals as there are too many variable. We do however specialize in helping ID vintage Bulova. We will be happy to provide a suggestion for the ID.
Known as the Bulova Stop-watch. Looks in really nice condition.

Nice!
Bulova Stop-Watch
S/N would seem to indicate 1942, do you have a photo of the movement that shows the date stamp?
1942 Bulova Stop Watch
1942 Bulova Stop-Watch
Bulova's in-house column wheel monopusher chronograph. Smallest diameter for a production chronograph. Getting rare.
Generally with gold watches you can rely on the gold value to get a sense of the value of the watch, unless it is a high end maker or extremely rare. The weight of the case would have to be determined by removing the movt and leather band, and for this I recommend a qualified watchmaker.
1942 Bulova Stop Watch.