This is a Bosch Head Light for the Laverda 1000 1200 CL Jota or other models. Also used on the BMW 900 and 1000.  With 190 mm window. The diameter of the bucket is about 200 mm.Very nice used state, chrome is very good but not concours and the reflector has 2 spots, see pictures.  

Ducati roundcase, Imola, Greenframe, SS, SD, GTS, MHR, SSD, Darmah, squarecase, S2, sport, supersport, Borrani, Ceriani, Scarab, Lockheed, Marzocchi, Brembo, monza , diana, mach, mach1, dm250, dm350, dm160, 160, 450, dm450, desmo, desmodromica, elite, elite 200, brembo, 900SD, Mark 3 , mark 2, CEV, 750, 750GT, 860GT, 900GT, MV Agusta 750 America GT SS