Can anyone identify this voltage regulator?

Greetings:

My '78 Westy has a non-stock voltage regulator that I am trying to identify.
You can see pictures and the part no. at
http://www3.ns.sympatico.ca/dwilliam...tage_regulator

It works fine, and charges my dual batteries no problem. I am just curious
about its origin.

I checked at the VW, Audi, and Mercedes dealers here in Halifax, Nova
Scotia, but no one recognized it. One guy at an auto electric shop thought
it was a Bosch, possibly from a European Ford model.

It is wired up with the green wire going to terminal 67, and the red wire to
terminal 15, crimped to the blue wire, which goes forward to the alt light.
The alt warning light works properly.

Appreciate any help anyone can provide.

Darryl Williams
1978 Westfalia (CDN)