If this is a variation of a Harrah's Las Vegas $1 chip CG007390, then why isn't the Harrah's $1 CG001222 also not a variation and assigned a Chip Guide number.?

Here is Harrah's chip CG001222 in the guide......

These are the two chips with opposite order of the three color inserts around the chip's rim

Left chip's colors (clockwise) pink, yellow and blue....Right chip's colors (clockwise) pink, blue and yellow. That's the same sequence of inserts on each side of the above illustrated variation chip in the guide...