Does anyone know anything about the quality of a DeJUR 135 mm Enlarging Lens? On the iris adjusting ring it says "DeJUR-AMSCO CORPORATION L.I.C., N.Y. Made in U.S.A." The front lens retaining ring says "DeJUR PROJECTION CHROMTAR f:4.5 135 mm No 1781D"
I actually have this lens and yes I have used it on 4x5. I can't tell you anything more becasue I only used it once or twice. I still have it but have gone to a 135mm Rodenstock. I came with on old Omega DII that was supposed to have been owned by a retired Life photographer. May have been an OK lens in the 1950's.
I used one of these for 15 or 20 years for 4x5 negatives with perfect satisfaction. The EL-Nikkor that replaced it may be better, but not enough to really matter.