1972 Dodge Demon Canopy Sunroof?

Alright I'm thinking of purchasing a rare Demon 340 with canopy sunroof but was wondering if anybody has one and could supply me with pictures of what they are suppose to look like from the inside. Because the one I want to get is missing the crank that locks it shut and guy has pliers attached to open and lock it. So did it have a crank or a lock knob for it? Any info would be greatly helpful and possibly where to get that part if they even exist. I'm trying to grow my sunroof collection of Mopars. Thanks Jon