Pewabic Detroit Art Pottery Commemorative Tile American Coke and Coal Vintage

VNTG Commemorative Tile for American Coke and Coal Chemicals Institute 3.75" Round Great gift for a collector! - Beautiful piece of Pewabic Detroit Art Pottery - Features the words "American Coke and Coal Chemicals Institute" and symbols representing the company - Measures approximately 3.75 inches round - Stamped 1991 - Excellent pre-owned condition - Original box, and flyer detailing the history of Pewabic Pottery. Box is in good shape for its age - Some faint residue marking in center section near the word "coke"