High-quality, turn-of-the-century half-hunter pocket watch. Ceramic dial, roman numerals, 21-jewel mechanical stemwind, stemset movement. The case looks like it's solid gold. In its day, this would've been a very high-quality watch (and it would still be considered a high-quality watch today).
In its current condition, it's probably worth...nothing. If a watch doesn't work, it's worthless.
By the time you get it serviced, cleaned, regulated...It still won't be worth much.
As a family heirloom, it's priceless, but it's actual monetary value will fluctuate like waves on a stormy sea. It might be worth a thousand dollars tomorrow, or it might be worth fifty cents. What a watch is worth is ultimately, what someone will pay for it. To find out what someone will pay for a watch like yours, look for similiar watches on ebay. In a simliar condition, made in the same year, and of the same materials and quality.
Do not, under any circumstances, attempt to run the watch for a long period of time, without first sending it to the watchmaker. A watch that's 100 years old needs professional TLC before it can run. And be sure to find an expert watchmaker.
Thanks for your reply it is as you said a solid gold case all 18ct of it I been told that by my local watch repairs but I don’t want just any old watch repairs getting their hands on it if I going to be paying out round a few hundred pounds to get it fix I want to know that its been look after and care for by someone that knows what they are doing it does still work but sometimes it just needs a bit of help, if anyone knows of a good repair shop in London that would be great as I am there 2 to 3 times a month with work but finding the company all watch maker that made this watch would make my day thanks for your help and time.