Weighs approximately 6.5lbs. 3/8″ thick and 10″ diameter. Made of heavy cast bronze or possibly brass. Crocker Wheeler Electric Co. On the back, it appears an engraved marking and with pencil and paper etching, it looks like…. 11223 RTB with W underneath. The item “Antique Crocker Wheeler Medallion Plaque Electric Fan Steam Engine” is in…