Originally Posted by
Jerry Flynn
It probably is a number 2 Compur. You'll have to get a board drilled. Number 2 is a non-standard size. I have exactly the same lens and I have had to get boards drilled in the past.
I may be mounted to a flange that was attached to the front of the board (mine was). You'll have to unscrew the rear cell, and unscrew the shutter from the front. It could be tight after all these years. You can then use the flange as a retaining ring. Don't lose or wreck it -as I said, it is a non-standard size (not compatible with Copal 0, 1 or 3).
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