I wound up with 2 extra sets of these in a deal with a Texas seller.
Would rather trade for any illegal chip I need but will sell for $13 for the pair, shipped.
Lots of history with the chips. Shades of Benny Binion, Herbert "The Cat" Nobel, and the Dallas Mafia wars. There have been several IOTD posts on this subject.

James Worsham
c/o Maurice Hotel
909 Main Street
Dallas, TX
11/29/45 – 2000 white, 2000 blue, 500 black