How to identify porch / doorstep floor tile from 1920’s house

Hi, I’ve got a few of these outside floor tiles missing from my front porch. My google search skills have let me down and don’t know how to identify what this type of tile is called and how to find a reclaimed tile or replica. The house was built in 1925 I believe and I’m assuming they are original.

I’ve attached a picture of the tiles.

Any ideas?

Thanks!!