Vtg Mid Century Ceramic Oval Ashtray Brown & Blue Drip Glaze Made in USA

Vintage ceramic ashtray in brown with pretty blue swirls in the center. Back says "Made in America U.S.A". The back has a few small spots that are unglazed. One of the stick-on cork pads is missing. Measures 8 1/4" long x 4" wide x 1" deep.