Flange for B&L 5x7 Tessar 1c

[alec4444]

Anyone happen to know the size flange needed for this lens? Or even better....have an extra lying around? With a crappy ruler it looks to be somewhere in the 56-58mm range.

Thanks!
--A

[diversey]

Did you find out the flange size of B&L 5x7 Tessar 1C? Thanks.