The platter is quite large c.35cms diameter. The decoration is on the bottom of the rim - very smart you cant get food bits in the grooves. As you can see the signature "Veramé" is part of the decrative frieze. I have recently seen on Google that this may mean "Verriers aux Metz". I am hoping that someone over there (12000miles away form Melbourne) may be able to verify that attribution - or else give me a likely alternative.
Photo #1 - the platter
Photo #2 - detail of the frieze
Photo #3 - The Veramé signature
Ross