At this point I do not know what is real and is not real. I only know what Whalen made. He claims no yellow ones. But watch out for the Red, White, and Blue Harrahs $2.50's. He made a lot of them. If fact I will have the 3 chip set by the convention.
I believe our boys have been running these in for 10 years or more, including the odd colored ones, aluminum ones, and the prototypes. Also the repaired drilled ones.