Want to Buy WTB: Kodak Flash Supermatic shutter retaining ring

WTB: Kodak Flash Supermatic shutter retaining ring
My 1948 127mm f/4.7 Ektar in a Kodak Flash Supermatic shutter doesn't have the ring that threads on the back to secure it to the lensboard. I think this is a size 1 Supermatic shutter, altho it does not say. It is similar in size with a Copal #0. Knowing what the actual thread is would be almost as good as being able to buy the ring. Check your junk drawers and warbags. I won't waste your time with haggle. paypal+3% +ship to 67211 = payment to you right away!
Thanks,
Eric

Contact SK Grimes if no one here has one. Tell them the shutter model, lens, etc. and they'll know what you need. I searched for a ring for a 203mm Ektar with no success; they had a mounting flange for $25.