Ignition switch cover
Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models
Thanks to Craig Sheldrick for sending me this information and photo in a private e-mail. In Craig's own words:
I'm in the process of putting together my July 73 Eldo 4-shoe x-cop bike, and While fitting up parts, I was looking in my stash of original ignition switches for a good used one, and I pulled one that was on a 18,000 mile original Eldo 850 California. (basically new, AND, no key of course).
I happened to notice, in particular, the switch cover (the one with the ring that has the black cover with the rubber seal) while unscrewing the large thick threaded mounting ring getting ready to mount it on the cop ignition switch bracket.
That's when I see some blue letters, and numbers on the ring! I thought, hmmmmm...I'll e-mail Greg a picture of this in hopes that someone might find this information useful.
Here is a pic of the letters and numbers. The last bit is a bit difficult to make out, so I wrote down on the piece of paper in the pic what I believe they are.
Cheers, and hope maybe this is helpful to someone. I'm sure through the years with these bikes, that this bit of info has long since been rubbed off on the vast majority of these rings.