A MONUMENTAL ICON SHOWING THE APOSTLE THOMAS FROM A CHURCH ICONOSTASIS Russian, Kostroma, 18th century Tempera on wood panel with kovcheg. The halo made of silver. Minor areas of retouching. 95 x 39 cm. MONUMENTAL ICON WITH THE APOSTLE THOMAS FROM A CHURCH ICONOSTASIS Russia, Kostroma, 18th century Wooden panel with two back sponki (lost). Kovcheg, egg tempera on chalk ground, nimbus silvered. 95 x 39 cm. Min. attunements.