Compton and Caroline, near SLU

Riding down Compton today, I found something that SLU has yet to destroy - another domino in the pavement.

There seemed to be a casino token next to it, though it was loose. It also seemed to have been mashed into the pavement, though I could have flicked it away. I felt like it was supposed to be there though.

If I were brighter, I could probably figure this out.