Thank you for viewing. This is a Mamiya m645. I have confirmed that it works, but there is deterioration of the covering, etc. The shutter sometimes failed to fire after winding, so I'm selling it as junk. The misfires didn't occur when winding properly, but please be aware of this and purchase at your own risk. The lens has clouding and scratches. The helicoid is smooth, but the focus ring has no rubber, so it's wrapped with kite string. Please ask any questions you may have before purchasing.