As I guessed, I misunderstood the source. Then it should be the rebodied Pandora/Mistron which has actually been a previous puzzle in its original form. I think in your puzzle it's in its Mistron guise. The older body was damaged in 1971 and replaced by this one so the photo should date from 1972.
(BTW I'd been trying to identify the circuit from the distinctive sloping dividing walls - it's only now I've seen the larger photo that I know the "walls" are actually chairs perched on the counter!)