I am immersed in tiles right now. I am working on a tile fireplace that will be revealed next week, but in the meantime here are some house number tiles.
These live outside my house.
These are in the mail to a house in Dallas.
They are painted brown terra cotta tiles then covered with 3 coats of white glaze, then painted on top of the glaze with the design you see and then put in the kiln and fired at a million degrees for lots of hours. The process of painting on top of glaze is called Majolica. It does not allow for mistakes....