A Large Imperial Russian Silver-Gilt Sauce Boat and Stand, Nicholls and Plinke, St. Petersburg, Circa 1858 sauce boat with screw-on stand, the rim applied with running laurel with acanthus at intervals and chased with Vitruvian scroll border, the boat rim applied with fruiting vine and body chased with rising stiff leaves and flowers, engraved on both sides with the Russian Imperial arms, fully marked on side and base of stand and with Imperial warrant, inventory numbers