Not my personal chip. (Trapezoid Hubs) The Hot Stamp is Flat (Not Recessed into the clay). Probably of more recent vintage. I picked up a few sets of these on ebay three months ago. I have two sets for trade if there is any interest ($100 Blue, $50 Lt Green, $20.00 White, $10 Black). Overall Condition is VG with some rim dings. Will trade for other UFC's or Illegals. I will check my email later tonight when I return home. Thanks, Gary