(Yearly attempt)
Well, I've been looking for years but surely someone has some of these lying in a drawer. Made by Yamaichi they were for the Rockwell "Spider" leg ICs from the 70's.
Yamaichi # NP32-42075-G4B
I have a downloadable PDF of the socket specs.
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And Yamaichi hasn't stocked this for years...
Some day...
Thanks!
John :-#(#