The author and production of the seventy-two pieces called Henri II or Diane de Poitiers ware are still clouded in mystery, but everything tends to prove they are the production of several artists, working in different localities and at different periods, in imitation of a style which had pleased the fancy of the King. Most of them were made near the close of the XVIth century, and are formed of a kind of pipe-clay. From the fact that most of these pieces were found in Tourraine we conclude that they must have been produced there. A number of them bear the arms of France and the monogram of Henri II.
Only one object, a plate in the South Kensington Museum, bears any mark and this is unintelligible.
There has been much discussion and several works published in reference to this remarkable ware, without, however, clearing the mystery about its production.