I recently acquired a large cache of enlarging lenses with some darkroom equipment. They were mostly common but high grade brands/models but there was one that I haven't been able to track down. It's an O & ER, marked Reston, VA and is a 4.5/135mm, made in Japan. It's a bit intriguing because it has a nice, sixteen blade iris and while it's compact (with 39mm thread), it seems to be of decent quality of manufacture. Googling didn't bring up anything but I thought that perhaps someone might have some idea about this. Maybe it's just another re-badged generic but the mechanicals seem to be of decent quality and it seems of relatively modern design. I get 6 reflections of light with a point source so perhaps it's a simple triplet?