I've completed the list of $1 U.S. H&C mold variations that have either different inlays on each side or asymmetric inserts; yielding 4 different chip variations. I only included chips on the list where at least 2 types were known. The missing types probably exist but have yet to be identified. I listed a few chips with only 1 type known since there was good evidence that the other 3 types may also exist. I'll add or subtract from this guide as updates become available. If you have any input, please let me know. The link can be found by clicking Chip Links at the bottom of my web site at the link below. Thanks.

The only chip that has all 3 characteristics and has a good change of yielding all 6 variations is the $1 Casino Royale from San Bruno, CA. So far only 4 of the 6 variations have been identified.