For a picture of this fine Lenz engine 66 002, Martin Silz purchased (and I got before my camera, I was in awe as well), see (static):

http://www.osterthun.com/2.StaticGisbert/Lenz30201a.JPG

and also in the Betriebswerk:

http://www.osterthun.com/2.StaticGisbert/Lenz30201c.jpg

Frits Osterthun