My copy of the Nikkor AM-ED (APO-Macro) f/5.6 lens finally arrived, with a Copal #0 shutter. I simply used a K2-Ring for the mount, a K-5 Ring for some exention, and then mounted the lens to a 37mm-52mm step-up ring directly to the front of the lens. I think I got that right.
Anyway, it works. I have it mounted on the Nikon PB-4 bellows and am using the Nikon D810 on the rear-standard. Here are my first to photos taken with the lens, enough to prove to me that this is a sharp lens, with good color, although the color may be a teeny-weenie bit on the harsh side. It seems well-corrected and, as mentioned, very sharp. I like it.
These photos taken with the Nikon D810, PB-4 Bellows, and Zerene Stacker.