Thanks for looking folks, off to fleabay. This is an IBM Model M PS2 connector, manufactured for IBM by lenovo, 02 May 1994. Very good condition, a little dust. $50 plus shipping or make an offer.

I picked up an 80's model M clicky keyboard off the Agora recently. Only problem is, the apostrophe key doesn't really have a 'click' to it and one has to push it down somewhat hard to get it to ...