Just what Scott and Wayne published: Rackliff Oill Company out of New Britain, CT. No company history.
I got this off of e-bay years ago. I've never seen (or heard of) another one.
FYI - I believe this image was originally intended to be a 13.5" lens. The white outer border is 3/4" (times two = 1.5", from 15.0" = 13.5") and there are some other clues on the art that lead me to believe it was supposed to only be a CAPCO/Glass Body globe.
None-the-less, there was enough existing information on my original lens for me to do a reproduction.
Here is a shot of what it would have looked like when it was new.