Hi Ferg!
I´m always searching for one for a reasonable price - one at Herman Historica sold for 600 + Euro - and wasn´t succesful yet (There have to be some examples around here in the hood, hidden in some closets...)...
A nice video-document about one of the ancient rotating engines can be seen here: http://www.gkmo.net/include/images/video/U0_Bericht.mp4
Regards (from Oberursel)
Hagrid
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