Elementary my dear Watson. I do believe you have the answer. Looking at my shutter more carefully and coparing it against a known Copal 0. The shutter for the Fuji lens just says Copal.

I do not think a recessed lens board is needed with your lens, but I am looking for a Wista/Technika board that is the reverse to let me mount a longer lens on my Wista and focus closer than infinity. Those puppies are not cheap

- Mike