Thanks for your responses and sorry, I did a quick search but didn't find any threads that's why I posted this. The car is from the Wayne assembly plant. Recently I went to the Simeone Auto Museum in Philadelphia Pennsylvania for a preservation seminar on their Shelby Cobra "Daytona" Coupe. This car has never been restored and had what was called a "preservation" by a well known restorer. This car also has the black pulley and blue fan detail on its alternator. Fred Simeone said during the presentation that this was indicative of the early hipo alternators according to the restorer and I was looking for confirmation of this. The later hipo alternator I have which I believe to be an original has the cad plated pulley and fan.
I have disassembled the alternator of detailing and will post some pictures up later today...