My good buddy and source of all things photographic has let me dive into his collection of old brass lenses - for experimentation only, of course. I took a few old Goerz double anastigmatics, a Dagor or 2, a Euryplan from Schulz and Billerbeck, Berlin (pre merger with Meyer, I think) and an oddity. I've been unable to find out anything on the Alfred Koehler f5.5 double anastigmat full plate lens that was in the pile. The only hit on Google was a post by our own Seawolf66 asking about reflections in this new (to him) lens. The only info in the Vade Mecum under Koehler is for E Koehler, not my friend Alfred.
Any info out there?