Unfortunately, that shot is not real helpful - a bit too much top-lighting to see what's going on inside. But from the looks of it, I think JABO is likely the best possibility.
Thanks for the history lesson, Ron. It's really interesting. It seems like the Vitro Agate brand had a slow decline to oblivion. Am I right to assume that Henrey Fisher was Art's son?
You have a lot of great multicolor pieces, Ron. And thanks for the info - it didn't show well in the pic but there is definitely a metallic sheen on the blue inside the lid of the powder I showed.