Pull a board and post a pic of it.
I have some sniendlenier (spellings way out...) Units that look like that. 70's stuff. Amazingly little on them.
The cost at the time would have been phenomenal.
Today the whole rack system would be postcard size circuitboard.
I am scrapping it down for the Solid Silver relay contacts. the reed switches, Copper wire coils and the small Brass buss bar.
And some Tantis, gotta love those Tantis.
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