Not a 1620--the system used a much wider row of
switches and
indicators. Not a 1401 or 7090 match either, from my memory, but
could be a 704 power switch assembly.
It looks very familiar - perhaps off a 709 system power unit
(7mumblefoo). I may have seen one on a Pierce machine last year.
That 7mumblefoo power unit wins the prize of the one piece of
computing hardware I would not want to have to retube.
--
Will