Hi everyone, I recently went on a 4-month trip during which I kept one of my watches stored at home in a gun safe (just figured it would be better to keep it in there for security). The watch has a medium brown leather strap. When I returned home, I took the watch out of the safe and noticed that some parts of the strap appear to have become darker, so the leather is no longer a uniform brown anymore.
To be perfectly honest, I am not 100% sure that this isn't all in my head, but I am reasonably sure that I'm right and that the strap did not have these darker spots prior to the trip. I'm also not sure if this is just how leather is supposed to behave (change a little as it ages?)
I was wondering if leather like this is supposed to be left out in the open so that it can breathe, or if it is acceptable to store watches in an airtight safe like this. There is no dehumidifier or anything in the safe, however I also store electronics in it without issue so I'm relatively sure that there is no moisture getting in.
Just want to know what you would recommend. I'm very much a novice when it comes to storage and maintenance. Thanks.