~~~ but rather a code, or is there an error in assignment (Antique Gambling Chips by Dale Seymour) or with ChipGuide?

If a code; should we note such in ChipGuide, that the "generic(?)" chips were also being used at the Riviera... or is there a known production order of the chips for the Riviera?

I want to believe the chips are Riviera, especially with all the photos we know taken from the property and showing the bridge.

ChipGuide image