What is this tile and what do its symbols depict?

I found a clay tile outside on the street that appears to depict the Buddha. It has a man in lotus position on one side and four scenes along with some text on the reverse. It is roughly as broad as my thumb. I'd be curious to know what scenes are depicted, the meaning of the text, what this tile is called, and what the function of the tile is. I'm guessing it shows his youth, becoming enlightened, being a teacher, and his death, but I don't know if it's more specific or different than my interpretation.