Welcome.
The first rule (OK, one of them
) with vintage watches is that you should keep them away from any water, even light rain, hand washing etc. Unless it's been given new seals, moisture will find it's way in.
If you can remove the case back (Please make sure you have the right tools !!!!!) and have some of those moisture absorbing sachets that come with lots of things these days, it's an easy fix. Put watch and sachets in a bag and they will draw the moisture out. If you can't get the case back off,or don't have any sachets, pull out the crown and leave it on a warm sunny windowsill, though this may take longer.
With regard to the date setting, wind the watch until the date changes, to 2am, then carefully (gently, I assume we're talking a nearly 50 year old watch) wind it back to 9pm. Then wind it to 2am and repeat. You should hear a click at around 9pm to confirm the date change mechanism has disengaged. If this doesn't work, you will unfortunately have to wind it all the way to the correct date.
Post a pic when you have enough posts.
The first rule (OK, one of them
If you can remove the case back (Please make sure you have the right tools !!!!!) and have some of those moisture absorbing sachets that come with lots of things these days, it's an easy fix. Put watch and sachets in a bag and they will draw the moisture out. If you can't get the case back off,or don't have any sachets, pull out the crown and leave it on a warm sunny windowsill, though this may take longer.
With regard to the date setting, wind the watch until the date changes, to 2am, then carefully (gently, I assume we're talking a nearly 50 year old watch) wind it back to 9pm. Then wind it to 2am and repeat. You should hear a click at around 9pm to confirm the date change mechanism has disengaged. If this doesn't work, you will unfortunately have to wind it all the way to the correct date.
Post a pic when you have enough posts.