circa 1930, the silvered dial, 35mm diameter, inner with guilloché sunburst decoration, black Arabic numerals, blued moon hands, subsidiary seconds register at 6 o'clock and chemin de fer chapter ring, unsigned and unnumbered jewelled mechanical crown wind movement with flat top winder, octagonal case, 40mm wide, foliate upper bezel and triangular pendant bow, verso hinged at 6 o'clock, engine turned decoration around a monogrammed rectangular cartouche, border of case and cartouche decorated with blue and white enamelled accents, interior numbered 110060 with Swiss marks for 18ct gold, 45.9g gross