I happened across this eBay listing (not mine) for an industrial operator panel, and it looks extremely similar to the Altair 8800 front panel. I assume this kind of panel interface was common in the '70s? What other well-known machines have this same interface?
Take a look at the Altair 8800 front panel: [courtesy of
https://americanhistory.si.edu/collections/search/object/nmah_334396]
Not sure why you would call that "extremely similar". Having address and data bus indicators and toggles (what I would loosely call them) on a front panel was not uncommon in an earlier time. I remember having to toggle in reboot code on PDP/8E, it was not a pleasant memory