Vintage Sascha Brastoff Ceramic Ashtray Silver & Gold Flower Mid-Century Modern

This lovely vintage ashtray is in very good condition. There are no chips, cracks, or repairs. The inside does have some staining from previous use. I have no experience with cleaning tar from ceramics, so I am not sure if this is permanent. It is signed and stamped, Sasha Brastoff. 4.75" tall, 5.5" wide.