The rectangular copper plaque with nicely rendered and detailed repousse decoration and chased details of three Bodhisattvas atop a central zodiacal medallion flanked by Apsaras and supported by two lotus roundels - one with trigrams and the other a lotus blossom with rich, impressed sanskrit. Other decoration throughout including large stylized sanskrit, small sanskrit labeling figures and narrating devices and the whole, and various tantric symbols. The mandala depiction surrounded by a beaded edge and the top pierced for hanging. 20th century and with good patina demonstrating some age and practical use. Good condition. Height, 12 inches (30.48 cm). Width, 10 11/16 (27.15 cm). The large, central lotus roundel measures about a full 1 inch (2.54 cm) deep. We have cropped some detailed views from our front and back photographs for closer inspection. The work is more sharp than our illustrations convey.