The Holy Trinity by Saint Andrei Rublev with riza (flat metallic thin film).  Russian Orthodox Icon.

Size: 

#A842 - ML (5" x 6¼" on ¾" wood). 
#1256 - L (6¾" x 8¼" on ¾" wood).  

Icons manufactured by a Russian supplier using their proprietary process of applying successive layers of color and metallic-like patterns resulting in a brilliant, detailed, and nearly three dimensional appearance.

Icon inscriptions in Church Slavonic.