Hey all, so I've been using my late uncles om1n recently and it was really clean when I received it a few years ago. So clean, in fact, I have recently begun to wonder if it was CLA-Ed before he passed away.

The prism has no foam rot and is actually surprisingly clean given its age. But the glue holding the "film type paper slot" thing on the camera back was starting to rot and I had to tape it back on.

What's really puzzled me is finding an epx 625g battery in the battery compartment, which is an (up to date) 1.5v cell battery. I think the old mercury batteries ran at 1.35v?
Any way to tell if the battery compartment has been upgraded up to take on newer non-mercury batteries? If so, this camera may have been CLA-Ed is what I'm thinking.