A VERY LARGE ICON SHOWING ST. JOHN THE FORERUNNER WITH A SILVER RIZA FROM A DEESIS Russian, 19th century (icon), Russian, St. Petersburg, Nikolay Nikitin, 1873 (riza) Tempera on wood panel. The halo made of gold. Overlaid with a richly engraved silver riza decorated with scrolling foliage. Marked with city hallmark, assayer's mark, 84 standard and master's mark 'NN