I posted this on another website back in November; I hope no one minds if I repost it here. I've wound it every day since then and it loses about two minutes per day, but I don't think that's bad considering it's age.
My fob is a very similar to yours, except its silver in colour and there's a pendant on the end that is shaped like an iron cross but no detailing on it. Given then age of our movements to each other I guess this style of fob was popular at the time. I'll post a photo of the fob at some point.
