Tail light lens CEV 9169 (to fit tail light CEV 5840)
Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models
Thanks to Gerhard Ziesemann for sending me this information.
The original CEV lenses (part number 9169) are quite hard to get. Bosatta article P-104 1963 (this number is imprinted on the lens) can be a good replacement (the Bosatta part number is RP 304,
P-104 1963 is imprinted on the lens). The Bosatta tail light lens perfectly fits the rectangular type of tail lights with aluminium housing, frequently used on early Moto Guzzi V7 700 models (and some Ducati as well), and only its design differs a little. It is used on a number of Lambretta and Vespa scooters.
Stein Dinse also sells this lens: Part number 017774380.
SIP Scootership also sells this lens: Part number 58002000.