That machine and photo are of our very own Larry (mills400c) on this site,, he submitted his photos of that Marvin site..
Regarding the Sign Brian, it is an original version, but not used very long.. There where three different style signs produced for the popperette with the one you see most often being used 99% of the time.
I have one of these older ones , like the one on ebay as well, the world Popperette is etched out of the plastic from the back, pretty plane. the other version is a metal sign with the the Popperette logo Screen printed black on silver metal. I have to find mine and then will post a picture..