From Google: Yellow or Canary uranium glass, often called "Vaseline glass," is primarily colored by uranium oxide, while green uranium glass may contain additional elements like iron to achieve a green color.
"Yellow uranium glass, often called Vaseline glass, is generally considered a brighter glow under UV light and is highly sought after by collectors."
Robert Block says that they are hard to find. He's the only one that has any knowledge that they exist and he runs international auctions.
Whatever it is, it's coming next week. All .66 of it and mint.