Thiel College Ashtray. Looks like Ceramic, may be China. Ash Tray is about 5 1/2 inches in diameter. Bowl is about an inch deep. Bottom is Marked Imperial China Decorators Trenton NJ. A Cream Colored Body with Coat of Arms in center of bowl. Marked Thiel College in Black Script on Side. Unknown Vintage. No Chips. Used and Ring on the bottom shows the most wear. Please see picture close-ups.