~~~ to 3/16-inch on the SmKey mold.

Several manufacturer's samples were found in the "Newhouse '94 Find" (insert info; archived) which included the $5 Harrah's Club Reno V4478 (search info). Some of the round inserts were as small as a pinhead; while other chips had a combination of both small and large.

Gene's scan reminded me of those inserts.