gefell mv692

I'm looking for 2 mic connectors for old-style Gefell MV692 mic bodies. It is a 7-pin (not 6 pin) Tuchel-style connector with a very coarse thread.

I can't seem to find them anywhere. Gefell have not returned my emails. G-prime doesn't have any, nor does Korby or Bill Bradley. I've found a source for the 6 pin version, but the 7 pin style seems to be impossible to find.