Archie, no way to know that.
Robert E found the chips. He found a lot less of one color but I have forgotten which one. He did state the numbers he found. He sent me the 3 chip set for getting the ID. When I posted the ID other chippers came forward and said they had some, and thanked me for the ID.

Here is my opinion of old chips.
They are something NO ONE throws away. They are put in basements and attics, and they are forgotten. When Uncle Phil dies, a relative finds them. At that time they either put them in their attic or they look on the internet and find out if they are worth anything. I cringe every time I see a post that says "New Find, Rare, One Of A kind, etc, etc".
IMO, most old chips exist somewhere and will be found someday.