What age can it be at this Edison Type RM magneto?
Serial. U7691 Spec. 03003 P
I have a book of about 600 pages, Automobile starting, lighting and ignition systems, up to 1916. Only mention of Edison is on his cell batteries.
On Google is the Manual for this type unit
Just a guess from the data plate style, would be the '30's or '40's.
... it was exactly what I searched, did not find this myself.
I also believed that it is from 30 or later ..
a 2 cyl of this type was still used in the early 1950s on Indian motorcycles.charley