EH Octave Multiplexer mystery

[analogguru]

In for repair today was a totally broken 1976 Octave Multiplexer.
While repairing and cleaing I discovered this interesting mystery:



So my question now is:

Do you know, who was Scotty ? 

Was he working at EH ?
In 1976, did every worker at EH have FET´s stamped with his name ?

Concerning the unit:
Now it´s looking like new, and working as best as it can.....the tracking is poor, the sound is horrable.

Stephen Giles factory schematic circling around is valid, maybe some component values at toppopicone´s site:

http://topopiccione.atspace.com/PJ19EHOctaveMultiplexer.html

were not correctly transferred due to bad readability.

IMHO this unit is not a serious effect, it´s more a novelty.
I would not even spend one resistor to make a clone...

analogguru

[StephenGiles]

Possibly, but the deluxe version is the one to have of course.