I'm trying to value some La Rue Casino (Las Vegas) chips that belonged to my Great-Uncle. The denominations are in $.10, $1, and $5 amounts, and in good shape. I received them in a clear, plastic chip holder with "BC Wills Co. of Detroit" (address/phone incl) embossed on the lid. I've seen single chips like this from $55 - $70. Would someone be able to give me an idea of this set in it's original case?