While going through my late friend Bobby Roberts machine shop, I came across this. I've tried researching it online and came up with a possible Porsche or VW use but none of the pictures I've seen have the mount collar like this one. Anybody got any ideas or can tell me where to get an answer?
The last Ronco mag I had I sent off to Ronco to be rebuilt so perhaps they are still in business and you can contact them about it.