I have a nice mechanical one I can sell but it's the type with no iris... not a problem if you're front-mounting a barrel lens. I also have an extra-nice electronic one with an iris and it comes with a controller but I haven't figured out the wiring yet... I really need to build a battery powered controller for portability but that's a project for the future.
If you can't find one to fit your needs then it might be best to find a junker lens mounted in a #4 Ilex and buy it for the shutter.
Hello, i was thinking the same thing, a junker lens with a good shutter or finding a junker lens with a Copal-3, although those would be more expensive. I want to fit a Componon 300/5.6. I like the Ilex shutter, have a #5 and it runs beautifully.