My dad brought this up along with some other stuff to see if I wanted it. Well, I don't really... but I feel bad trashing it. So, perhaps someone can use this on their vintage car. 1950's to 1970's vintage, generally, but will likely fit more. I THINK this was bought for our old 1972 Biscayne, but, not sure.
Anyway, it's been on a shelf since the 70's or 80's and now it's up for sale.
Westinghouse Safe-T-Beam Model 4000. Low Beam. Fits "universally" with cars with the 4 light system of this style bulb.