I recently bought a vintage Mirona watch with a Unitas 6300N movement (here's a thread I made about it: Need help identifying "Mirona" wristwatch!) and I'm looking for advice on how to use and maintain it. For example, the watch speeds about a minute or so every day which I want to correct. When correcting the speeding minute I've been rotating the crown counter clockwise never giving it much thought. I did however read that this potentially might damage the movement in these old watches (especially watches which track dates). I did a bit of googling on the matter and there seems to be a lot of opinion regarding this out there and I'm as confused now as I was before.
What my searches came up with was that it's probably best not to set the time counter clockwise. Even though having to set the time a minute back going clockwise seems like a lot of hassle when you have to do it every day.
I also read something about "hacking" which I tried. It didn't work at all when my watch was fully wound so I had to wait for a couple of hours until I managed to stop the second hand by putting a slight pressure counter clockwise. I stopped doing this however as the second hand started moving backwards for a couple of seconds. This seemed like something that'd potentially be damaging to the movement.
Lastly I'm curious on how to wind the watch properly. The first days of owning the watch I was more or less constantly winding the watch to fully wound position. This seemed a like a bad idea after a while as it probably wears out parts unnecessarily quickly. I realized it's probably best to just wind it fully once when I wake up instead and leave it at that. I do like fiddling with stuff however, so it's going to be hard to resist not winding the watch a little when sitting on the bus for example. What are your thoughts on this?
I also read this when googling: "4: After you feel resistance stop winding. NB: Some watch experts suggest that you wind the crown backwards (counterclockwise) five or six turns. This may help re-distribute some lubricant, and, in the case of some early or special models, it may relieve some strain on the watch's inner workings. In any case, doing this "back-winding" won't harm your watch."
How to Wind a Mechanical Watch
Is there any truth to it? I had to see what happened when I wound my watch backwards a turn or two. Nothing exiting happened. There was no resistance whatsoever (unlike winding it in the proper direction) so I believe the spring was "disengaged"? I guess winding backwards is quite pointless?
Thanks in advance for any help and I hope my post wasn't too confusing!