My favorite.
Passed at the Fremont in the 60's. A Reno chipper came by them and sold them as the real chip. TCR S -$300-$349. I am fairly certain he thought they were real.
They are very close. You have to know what to look for.
I have heard several stories on the origin of these chips.
I have been looking into them for over 3 years. If I can get a few more pieces to the puzzle, I will write a column on them. It could blow your mind, if I can prove it. I know that sounds dramatic but, it will be.