This is a beautiful, antique, porcelain, hand painted, jam or condensed milk holder. This piece is hand painted, and signed J. S. It has red grapes and is accented with green grape leaves. The artist was exceptional.
This piece is married. By that I mean that the condensed milk holder itself was manufactured by Tressemanes & Voyt of France. According to its mark it was sold as a blank (not decorated), and produced between 1891 and 1907. The under plate was manufactured by Moritz Zdekauer (MZ), of Altrohlau, Austria, who was in business from 1884-1909.
Take a look at the pictures, and if you have any questions, please e-mail.