hello, I also have a similar bike and I'm trying to confirm its name could you send me photos of the stickers so that I can redo them, do you have other images of this model thank you in advance nono
Schauff is usually pretty nicely documented at a german Webpage (it looks oldfashioned, but bikes are nicely listed per model year).
Just it seems that not every model or variant made it in their official catalogs etc. and on this page.
The High-Voltage "Drive side fail" ECS is showing up in the 1991 line-up http://www.mtb-museum.de/bikes/91/bikes91.htm
but it seems it was also available in other colors or later years (maybe till 1993?)
if there is still more intrest on this specific frame, i think i found meanwhile the producer in an old ad in an Bike magazine from 1990.
The Taiwanese producer A-Pro has shown this frame at a trade show.
To me the one later used by Schauff for instance.
Also the german Brand Winora sold this apparently as model "New Game" for some years.