This square plate was made by Sebring Pottery and used to promote support for the war by buying War Bonds and Stamps. The pattern # is Chantilly IT-S284 with 22K Gold trim. These were found in a deceased relatives dresser and were wrapped in newspaper. They are in relatively good condition. There is a little checking and some flaws but they are really extraordinary. I do not know these were produced. The marking on the back of the plate is "22 carat gold FOR VICTORY Buy war bonds and stamps. 6-3/4" square