RUSSIAN SILVER NIELLO DRINKING VESSEL, GAVRILA USTINOVA (1806-1851) marked under base: with maker's mark for Gavrila Ustinova, assayed by Andrey Kovalski (1817-1856) and with Russian silver mark 84, Moscow 1843, the tall slender flaring cup decorated with city scenes in panels above rows of foliate design in panels, all above stepped and fl
