Do any of them have black paint on the ID tag? 6 volt Delco-Remy generators had black tags- - - -12 volt has a red painted tag. If you can post some part numbers I might be able to look up amperage capacities, if not actual year of manufacture information. Most 6 volt generators had a straight housing with a spring steel band surrounding the brush area. 12V types usually had a longer, stepped-down housing with no band.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!