Here's the only model 20 that I have. I really like this knife and grabbed it as soon as I saw it. It has the thick center spacer, squared top guard, and stag handle with finger grips. I'm not sure how old this knife is... dating them is still something I struggle with. When I think I have a good grasp on it, osmething throws a curve and messes with my head. (no comments needed on that one Chief-ha!)

Anyway, here are pics of both sides...
~dale