Here's a couple of chips that came out of a dealer's "junk box" that had mold designs I don't think I had in my collection.

The one on the left is the Tri-Bal according to Robert Eisenstadt's excellent website on mold designs. You should visit Robert's site if you haven't already. Robert has many of the featured mold designs for sale too. http://www.antiquegamblingchips.com/molddesignindex_site.htm

The mold on the right is known as Roman, Roman Border and Weave.

It's great to find that one sought-after chip and exceeding your budget to put it in your collection, but nothing beats the thrill of a $1 junk box find!