270mm f9 Schneider G-Claron is superb and in Copal 1 shutter. The early version "Dagor type" is the equivalent of a Gold Dot Dagor, except f9. They are hard to find. Later version is a plasmat, and also very nice, but bigger. Both would be Copal 1, but the Dagor type was a 55mm filter iirc and the plasmat would be 62. Someone correct me if I'm wrong.
Another really superb lens, but even harder to find is the Red Dot Artar 10 3/4" in Compur shutter.