egg tempera, gold leaf, and gesso on wood panel. Two insert splints on back. 37.3 x 31.8 cm (14 5/8 x 12 1/2 in.), the oklad with Cyrillic maker`s mark UK , with dated assayer`s mark of Mihail Karpinskiy MK 1836 , Saint Petersburg town mark, 84 standard, the miraculous portrait of Christ appears on a delicately shaded green cloth with intricately gilded acanthus leaves, held up by two angels standing on rolling clouds, the gilt silver oklad with niello details, the edges with chased borders featuring scrolling grave vines, with a gilt silver radiating halo