Teisco S-100P with full edit and CV

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via this Vemia listing

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"This was an nice DIY project. The preset Teisco S100P has a really interesting internal structure (VCO, LP VCF, 2x EG, 3x LFO, PWM, formant filter (which is originally used in only one preset:), two HPF filters... plus spring reverb, aftertouch, analog flanger, which is unusual for a small monosynth. So I modified one preset to make it fully editable, see the panel on the right. In addition, a CV/Gate input has been added. It sounds great, dense, meaty.

Technically perfect, visually see photo - lots of 3D printed parts, including potentiometer caps, etc. The added editing panel can be easily removed (and the Teisco logo put back), but that would definitely be a shame.

Personal pickup possible in Prague (CZ) or Essen (DE)."