Genuine Bosch 200 headlight lens as used on many Guzzi models. These headlights are notable by their extra large (larger than the more common 7 inch) diameter. These headlight lenses measure ~190mm (~7.5 inches) at the maximum diameter, and the forward part of the lens, which would be visible at the front of the motorcycle (the exposed part not under the chrome ring) measures about 7.25 inches. Compatible with many models with the large round "200mm Bosch" headlights from the 1980s through the 2000s, some 1000cc, mostly on 1100cc. This lens is for drivers driving on the right hand side of the road.
Fits various: Bassa, Jackal, California Special, California Special Sport, V11 Sport, some California II, some California III. Be sure to measure your lens before ordering. Guzzi was not consistent on some models, so the model listing is a guideline at best.