Found strange tag or tile

[comber]

I rarely play blackjack (or any other card games), and I have nothing to say or ask about actually playing the game. I created this account solely to post this question: Is this 2 inch square by approx. 1/8 (0.112) inch thick engraved plastic tile some kind visual aid for hearing impaired blackjack players? The House Way and Hold sides are engraved for horizontal flipping- I only pictured them rotated 90 degrees to make it clear that this is a two inch square. I found it in a downtown Palo Alto, California parking lot a week or so ago. There are no casinos or card rooms anywhere nearby, as far as I know. Thank you!