Nerio Pancaldi

The pictures are taken in the Museo Poggi in Castenaso (BO) Italy : https://www.facebook.com/pages/Museo-Poggi-Yamaha/186891738105459.
The desmo-heads are mounted on top of Morini Corsaro (125 cc) or Morini Corsarino (50 cc) engine blocks. Unfortunately, no more information can be given at this time.
This page is still missing the evidence that we deal with a real desmodromic system!
Autopsy did not take place and there are no drawings or pictures of the possibly used systems known to me.
More to investigate!