A Russian Aircraft 56 hour boxed chronometer by Kirove, No 2417, the chapter ring with arabic numerals and minute graduations, gold hands, subsidiary dials for seconds and up and down, the bowl suspended by four springs in a gimbal and housed in a brass-bound pale oak three tier case, with winding key and electrical connections and switches for lighting and heating and a take off for an electronic slave unit, with carrying handle and instructions for use in Russian text pasted inside the lid -- 4¾in. (12cm.) bezel diameter