I've recently been given this watch and an trying to find out more about it. The serial suggests 1946 with the model number 6072-4 but that's about as far as I have got. The watch appears to be keeping Tone ok and has some nice patina on the dial. I'm considering doing some sympathetic restoration but I don't know where to start. The crystal has a small crack (bottom right edge) which is barely noticeable. If possible I'd like to source a replacement but I suspect that is going to be difficult for such an old time piece. Any advice on sourcing spares, or suggestions on the way forward would be greatly appreciated.