Just picked up a Kiev 88 off the'bay and am trying to figure out if it's a 88 or 88cm mount. My understanding is that the 88 is a screw mount and the lens unscrews like a Pentax M42 mount, while the 88cm, you hit the button, turn the lens and it comes off, like my canon EOS system.

I know it sounds stupid, but before I go buying a few lenses for the new camera, I'd like to make sure I've got it right.