I purchased a Mark II in 1991, and other than one outing last spring it had been in my safe for ten years (in good as new condition).
I had a momentary lapse of sense a couple weeks ago and posted it for sale for $175. After a couple nibbles but no offers, I snapped out of it and took it off the market a week later. I've cleaned it up and will be taking it and my other Mark II (FEG 22LR) to the range this week.
Man, that was a close call.