In my error collection, I have one CIC chip with one side put in backwards, so it looks blank but you can make out the impression of what is stamped on the other side. I’m convinced it’s a genuine error. I also have a CIC with one side struck well off center and one chip that is double struck so badly, it looks like a 1955 Double Die. Every one of these I found while playing in those casinos, so carefully inspect everything that passes through your hands. I would picture for you, but I am currently on the road.