What was the fifth suit that was added to a standard deck of cards in 1937 but never caught on because people had to buy all new decks?

The fifth suit was called "Eagle" Also called the "Green Suit", it was green in color, and was only added for a short time. It was known as "Royal" in England. Check out this link http://www.bridgeguys.com/GGlossary/GlossG.html and scroll down to "Green Suit." No pictures of the suit at this time, though.