Hirose HRS 025024 24-pin Female Plug/Socket w/ 1m Shielded Cable Hirakawa Japan

HRS 025024 Connector with ~1m Shielded Cable. Removed from vintage scientific equipment. 

Note: I don't believe all 24 conductors are populated, you will likely need to remove the back shell and modify for your application. 

I have two available, cosmetics may vary.