Despite the “Rolex” on the dial (which refers to the case), this is a Tudor watch, as it has a Tudor movement. Philip sent it in, and it has a couple of problems – you can wind it, but it doesn’t run, the crown doesn’t screw down, and there are some hairs under the crystal.
The most likely cause for the movement not working is a broken mainspring, and that’s easy to fix. The movement will need a service anyway, and I got to sort out the crown.
The pendant tube thread is fine, which is good, so we only need a new crown. There are two choices: original Rolex for £180, or generic for £18. Factor 10, and Philip makes the same choice that I would have made. You can always buy a Rolex crown later if you feel like it, but the difference of £162 will pay for a lot!
Now everything is back together, I waterproof test. I have a slight loss (10% in one minute), and that probably comes from the oxidised case back. I did clean that up as well as I could, but 10% isn’t a big deal. The watch will be fine for doing the dishes and taking a shower, just not for diving.