I've pinched this from my dad as I'm going to get it serviced and restored as a christmas present to him. He's not worn it in more years than I can remember and it's not been serviced since he bought it in the 70's.
Unfortunately this one will be going out to someone better equipped and more experienced than myself. Although I would love to do the work I want this one to be perfect. I'll update the thread once I get it back.
It's a beauty! I once got a watch serviced for my dad, it belonged to his dad and was a long service reward he got in the 50's. He loved it and it was the best gift I could have got him, his face was a picture.