First post folks, Hi there from Worcester UK.
Interesting box that, Section Ref 6L suggests may be Link Trainer related, and that ARI.5428 pops up in a list of equipment required to be installed in the Victor, early 50s. Could that particular Control Unit be from a Victor sim I wonder? Nice clean condition, and exposed, loomed cable bundle rather than the usual type of in-service couplings / cable? Just a thought!
Best Regards
John
Ah, sorry, missed XH175's reference to Link D4!