I got these made for 300mm f/4.5 lenses (Fujinar, Xenar, Heliar, Tessar) https://www.largeformatphotography.i...nel-5A-Shutter
These adapters will also fit the Apo-Nikkor 480mm f/9 lens. A similar adapter for Verito 8 3/4" lenses for mounting on Copal 3 shutters is in the works.

Kumar