Here's a couple of videos to check out on YouTube. I think the first video may be a different variation of the E-100 series.
And here's some info I pulled off the net.
Model E-100
Production Years:
Jun 1965 to 1969
Cabinet Size:
48x26x48 (WHD, inches without bench), 410lbs with bench and pedals.
Finish:
Walnut, Mahogany
Manuals:
Swell and great, 61 playing keys each. 25-note detachable pedal board.
Controls:
One set of drawbars for each manual, 27 control tablets, 5 percussion voices, brush effect and cymbal, harp sustain and 'vibrato celeste'.
Features:
79 tonewheel generator, photocell Expression pedal, straight and reverb tube amps, some solid state for features (pedal frequencies derived from a monophonic two stage divider). E100 - pre-voiced percussions, Harp Sustain and manual rhythm (Cymbal and Brush)
E200 - Institutional version of E-100 with locking top, presets and stops adapted for liturgical music, no rhythm, fewer percussions
E300 - Stripped-down version of E-100, no Harp Sustain, no rhythm
Styles:
E-111 Traditional in Mahogany
E-112 Traditional in Walnut
E-133 French Provincial in Cherry
E-143 Early American in Cherry
E-182 Italian Provincial in Walnut
E-262 Institutional in Walnut
E-265 Institutional in Oak
E-311 Traditional in Mahogany
E-312 Traditional in Walnut
E-333 French Provincial in Cherry
E-343 Early American in Cherry
E-382 Italian Provincial in Walnut