This is an unused antique bathroom border tile in the Shell and Ribbon pattern, popular through the first quarter of the past century. 

This particular tile is an especially lovey example,  having a nice crisply molded pattern and translucent glaze.

 it is delicately hand panted in several soft colors, and trimmed with a bit of gold like a piece of fine china (It's ceramic, though not china).

Several companies produced very similar tiles in this design.) The maker TRENT faintly moulded into the back of the tile (see photos)..

I have ONE tile, in very good condition, never attached to the wall. Please look at the photos carefully; there are a few small issues at the edges and some light crazing to the glaze. In spite of these ,this is a beauty. I will pack it really well.