Looking for Kycon STX-3680-5CB Jack Sockets (acidlab)

[NMNMNMNMNMN]

To get an M303 from Acidlab back on the road again I need a replacement socket. These haven't been stocked since many years and Kycon says its obsolete. No drop in replacement either.
I'm looking for - preferably - a set of 10 or 20 pieces. Does anyone still has any? And willing to sell me a small batch? Or even just one?

[guest]

is there any difference to the newer STX-3680-5NB?

[EDIT] i see, the N part is not threaded.