Bought several Italian plates and platters from a collector in Dallas.  These are both 10" and might be from 17th century.  Since I have not had them appraised, I'm asking a low price but they are still rare and highly valuable.  Message for more pics.  I have some I'm selling that are 18"-30" also. No markings but others like these are DeRuta.  One on e-bay is selling for over 11,000.00