Should work (but please get conformation from other people as well). The most important thing is that when swapping shutters that the overall length of the shutter/lens combination DOES NOT change (there is a bit more to it, oa the distance from the inside glass elements to the aperture). The lens threads of a Prontor, Compur or Copal O should be identical AFIK (probably there are exceptions). If Dan Fromm does not respond try to PM him, he is very knowledgeable (as Ian is too..;-)..)
Good luck,
Cor
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