When looking at your chips, I noticed that the star which makes the apostrophe in Harrah's was located in a different location on the chip. The dark version has the star well into the hat and canes whereas the light just tips into it. the first "H" also butts up against the edge of the inlay, whereas in the light there is much more space. I decided this could be a printing aberration and chose not to post it. I just found, however, the trader scan that I made when I first found those chips (I was the one who posted the color difference on the board). I see the exact same difference, without variation. so, I would assume that you can tell the difference that way. Does anyone have one that does not show that difference?

Here is my trader scan:

Michael Siskin