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"100% unique hand built EML synth based on the 100 & 101 series. I believe this was built by an employee around the time the company stopped building synthesisers in the mid 1970's. It is semi modular in design and includes a spring reverb."
If anyone has any additional info on this one, let us know.
I love it when things like this come up. This belongs in the rarest of the rare synth category. Like something you'd see in a synth dream.
Update: I did a quick search for EML Prototype and found
this previous post from back in 2007. You'll find some additional info there.