1920's Zenith with a big tonneau hinged case, m 40mm. x 29mm. (without lugs) made for the Russian market in 14kt rose gold and bracelet in rose gold and Platinum.
Original silver dial with black Arabic numerals with red twelve bordering inner minute track, subsidiary seconds at six o'clock, blue metal hands, polished tonneau shaped case with integral hinged horse bit lugs with Russian standard marks, fitted associated with a rose gold and Platinum 950 amazing bracelet. case and dial signed 44mm x 32mm.
Powered by a manual winding movement Zenith just overhauled.