Marc also told us that: "I would think that your toilet was made in England closer to the turn-of-the-century. 'Rotterdam' is the pattern name and it was probably and export item to the continent (but this is speculative). Staffordshire was know for its transfer patterns and they were used for years on a variety of different items. Your toilet, like our sink, has an ink transfer under the glaze and then the transfer was hand painted (there may be a painter's mark on your toilet--so that the painter would be paid for their efforts). Both of these items are rare--few Victorian sinks or toilets had transfer patterns, fewer still were polychromed or painted under glaze, and fewer still have animal motifs (birds are not the best but they are pretty darn good). I was thrilled to see your toilet (it is a real treasure)."