Frankly, I'd be quite happy with within 12 seconds a day on a vintage watch.
If you want something as a daily, highly accurate timekeeper, you better find a modern, or even a vintage
quartz, or get a professional to help you on this one.
I'm definitely with Al on this.
So, a much more important question is, has it had a proper service, so that such a valuable movement as this one will have a healthy, longer life?
Click to expand...