Interesting string of observations you inspired. I'll say one thing - whoever restored the distributor, or whatever they did to it, did a pretty darn good job of whatever they did - it's pretty close in all the details, enough to lead you to believe it is genuine. The worst problem I see with it, outside of any of the details we have discussed, is it's just too darn nice and shiny for most people to believe it. Maybe the actual measurements will clue us to a proper decision about it's authenticity.
As a result of this discussion, I don't think I'm going to do anything to my string of distributors (499,467, and 480's) other than a good cleaning and reassembly. I was considering sending them to Jerry, but now I'm worried about the end result of re-skinning being "too" good in appearance.
Let us know what the thing measures at, and hopefully we're done with controversy.