147 Vintage CLAY POKER CHIPS - Red, White, Blue, Plain, Possibly 1930's - 1940's

Description

Description -
One lot of 147 clay-composition compression-molded flat plain poker chips with no mold or design marks - 30 red chips, 30 blue chips, and 87 white chips.
Condition -
All of the chips show obvious wear and soiling from use, particularly around their edges.  They are very chalky as well.  One chip has a portion of its edge sliced away in order to allow a close-up photograph for this listing, and perhaps help assess age.
Backstory -
I cannot state definitively how old they are, but they belonged to my father-in-law, who was born in 1898 - if he purchased them new, himself, I suspect he might logically have acquired them in his 30's or 40's - thereby dating these to the 1930's or 1940's. It's entirely possible he acquired them in some other manner - they could very well be newer than that.  I'm not expert on this topic, but it is very evident that these are old.  I wish I could be more precise.  It will have to be up to a buyer with expertise to accurately assess age.
Here is some relevant history on clay poker chips that I assembled...
Several companies made clay-composition compression-molded poker chips from the 1880's through the 1930's (there are no pure clay chips, as they would easily crumble and break - only about 30% of the composition is clay - the clay component provides filler and density and helps control manufacturing cost - other early chip ingredients included chalk, wood dust, minerals, natural resins, binders, dyes, brass powder). Then, from the 1930's into the 1950's, chips made by/and/for underground speakeasies, card rooms and gambling halls flourished when anti-gambling sentiments were high. That phenomenon created today's market for illegal chips produced during those decades. Beginning in the 1930's, clay-composition compression-molded chips began to be mass-produced using newly invented Plaskon (a plastic material) as part of the compressed composition - actual manufacturing formulations then, and still, unknown. These early chips - like those in this auction listing - were plain, flat, had no mold or design marks, were a single color, and tended to be very chalky. Some of the most collectible chips are from The U.S. Playing Card Co. between 1907 and 1939 and The Portland Billiard Company - and then The Burt Company from 1940 to 1985. Atlantic Standard Molding is another of these early producers of clay-content chips.
Please email any questions not answered by the photos and description before bidding. Thanks.