A little more info...
The steins were made by a company named CUI Inc. in Wilmington, NC -- no relation to Charlie Ursitti, evidently. They seem to be out of business now, since according to trademark records they have not been responding to notices since about 1999. The C likely stands for Carolina which appeared in one of their trademarks. They made various kinds of "modern memorabilia". Here is another stein from them:
The site worthpoint.com has two records of sales of one or two billiard steins on Ebay but no full set.