You did a good job of uploading the photos. I need to see a photo of the movement more in focus as well as a photo of the hallmarks on the case.
I am afraid my camera is not that good for close ups even on macro
sorry! I tried a few but came out of focus.
Without being able to see the hall marks I can only give you a time frame for this watch. This is a chain driven Fusee circa 1820. Similar watches sell for 150-250 Pounds at auction and Insurance value is 500 Pounds. These are collectible; however, the market has gone down a little from the 1990s. I hope this helps.