I was going through my enlarging lens and found a second Wollensak 50mm, I have a matched set of 50 and 75mm that I set up for use on my Opeums III, these both have chrome barrels and are labeled as enlarging raptar. The second is in a black barrel, red lettering on the face of the barrel 2" (51mm) Graphic Raptar. Barrel is a little shorter than the enlarging raptor, and not as heavy, might a 3 element design. Have no idea why someone would need a Graphic 51mm. Anyone have any thoughts?
