The writing above is found on the back of one of the tiles and I'm not sure whether it is a signature or pattern name and number. However, it all adds to the interest in a fairly utilitarian object. I would love to have a mixture of tiles as a splashback, although they would probably have to have similar colours in them to make the different patterns work together. Alternatively, they could be like a dot plant in a flower border - the central piece around which everything else is placed.
I wonder what else Chris will find?