992 case

[Rancher]

I am looking at a 992 that is cased in a Keystone J Boss 14K gold filed case serial number 7118170 can anyone give an approximate date of manufacture? would this have been an upgrade or Jewlers case typical for a 992 in the late 1920's? Bob

[Rancher]

I am looking at a 992 that is cased in a Keystone J Boss 14K gold filed case serial number 7118170 can anyone give an approximate date of manufacture? would this have been an upgrade or Jewlers case typical for a 992 in the late 1920's? Bob

[Kent]

Hi Bob:

Although a lot can be learned about an American watch by knowing the movement's serial number, there seems to be very few surviving records from the watch case companies. So, other than studying the style of the case and making an educated guess as to which era it belongs, it is extremely difficult to trace the case's history. So, please post a picture of the case and of the movement sitting in the case (so we can see if there are other case screw marks). We should be able to determine if the two look like they belong together.