Well, if it's a copy, it was done in '63, because that's when that thing was installed. I've checked all the usual sources and can only find a 4 hole that looks like that, but with 3 light pods, not just 2. I haven't taken it all apart yet (that will come) but looking as carefully as I can from underneath, I can't see any logo at all.
I hope I find the answer some day.
Verne