Singh Ray Daryl Benson ND-3 Rev. Grad. for Cokin P lens mount_Canon RF This lens is a classic

This lens is a classic Tessar design lens for M42 mount

among other firsts (Cameraquest has a good writeup here)

they won't affect imaging

it's gold coloured

please note that this is a manual focus lens

Singh Ray Daryl Benson ND-3 Rev. Grad. for Cokin P lens mount_Canon RF This lens is a classicThe Singh Ray Daryl Benson ND 3 Rev. Grad. is a 3 stop "reverse" graduated neutral density filter designed to fit in Cokin P filter holders (sold separately). A reverse graduated ND filter is darkest in the centre, like a regular grad ND filter. But unlike a regular grad ND filter, which gets darker closer to the edge, a reverse ND lightens up: you can see this on the image. A high quality filter in excellent condition.