According to Ernst Leverkus in Motorrad Classic 1/’99 the 1954 Capriolo was supposed to have the 1926/27 Küchen desmodromic testengine.
According to Siegfried Rauch in MC2/’99 a 1958 75 cc Six-day cross Capriolo was used for 6 days without any problems with the same Küchen desmodromic system.
At this very moment I cannot already show a picture of the desmo-hardware. For more information on Capriolo you can visit: http://digilander.iol.it/parsecweb/index.htm
Nb The shown Capriolo pictures are of the non-desmo type!
The Küchen system = [Classification = Group 3].
The pic on the right is from the famous Capriolo predecessor Chater Lea (GB 235348 and GB 260506 resp. patentented 1925 and 1926).
Capriolo pics used with author permission.