Is that the same Ysarex you find on a Polaroid 110A/B and is that also a Tessar... so why is it better
Yes, I robbed it off a Pola 110b, I believe it is a tessar It's the first LF lens I personally owned, I'm used to it, am comfortable with it, know what to expect from it. I love the angle of view. It doesn't have a self cocking shutter, so I have to think before I shoot. I paid $10 for the camera a few years back, really affordable back then, everything else was out of my price range(I'm disabled and on SS). I have other lenses now, but this lives on my 4x5, I change out if the situation demands.
BTW: the big kid in my avatar is my hero, my son, who proudly serves us in the Navy. "SALUTE"