A few years ago, a few O'Sheas $25s were found with "Bicycle Club" house molds. The source told me that every $25 chip in the cage was inspected, and the errors destroyed. Well, I got one, and judging by the wear, it must have been on the tables a long time before being discovered. Some collectors may have one in their collection without even knowing it. Here's an old Sands chip missing an insert. Also a lot of wear.