Jill, looks like your top two dice are a pair. Probably late 1950's to mid 1960's. We have them valued in our new book on Las Vegas dice as $21-$30 with a rarity of R-4. The bottom two dice you have in your scan are actually two different singles. The first one being a late to mid 1960's variant with a three color logo. Some of these variants are dated 1967 on the one side. The 1967 dated variants usually come in a polish finish. Very nice when all color is intact. They are valued in the new book as $101-$150 depending on condtion. The rarity is R-8. The last single is also from the same vintage as first pair. We have it listed with a value of $21-$30 with a rarity of R-4. Our prices are not only based on ebay but what has been sold at casino collectable shows and my close working relationships with most of the top dice dealers that handle Nevada dice and what they sell them for. If interested email us back at either vintagedice@hotmail.com or aaj777@adelphia.net and you can order the new book from us. It will be available this coming Monday. Thanks, hope this helps.

PS: enclosed a couple of page scans from the new book dealing with the Thunderbird. Lots of rare Thunderbird dice out there.