"I do see that it is included in ChipGuide as a Playboy, Atlantic City, Manufacturer Sample Chip, as shoiwn here:"

IMO, listing it as a "Manufacturer Sample Chip" is a very misleading term.
There is no doubt it was made by someone else from 2 chips.
I have several different examples of 2 sided coin inlays put together by someone.

IMO, it should be listed as a fake chip.