You are looking at an Italian Marble Plate that my parents purchased in Florence, Italy in 1967!. It measure 9 1/4" across.  Purchased from Raffaello Romanelli, Sculptors, Exporter, Antiquarians they were established in 1860!  It is nearly flawless and has the original receipt!  Yes, I did cover the price with a sticky!  If you buy it you will pay more than they did!  But I will show you by including it with the piece!  Back to the flaw.  There is a small (very) nick in the edge.  Hardly visible, it is best found by running your finger around the dish.  But it is there. I have given you two closeups.  One, with out a point of reference and the other with the battery.  The flaw is just to the left of the battery.  Hopefully I have given you enough to allow you to make your decision.  If you have any questions please contact me!  Happy Bidding!