If you noticed, the picture of the rear of the fan / pulley assy has a number 3 stamped on one of the cooling fins. Sorry, the housings are in the tank, but I'll check the assembly dates when I take them out. The car is a 10C (1966) production vehicle, so I would imagine it's possible to have a March through May alternator, as I have read they were produced in batches. I take it the concensus is that this part should be dark gray phosphate, but it sure appears to have paint on the face of it - maybe it had been refurbished in a previous life, as I am the 4th owner. Thanks again for your assistance / comments. I would still love to see a picture of an original / untouched part, but would imagine that's near impossible. Thanks again.