Zenith 18kt Gold Open-face Watch

Zenith 18kt Gold Open-face Watch, Switzerland, no. 1818940, enamel roman numeral dial marked "Zenith," gold-tone hands, stem-wind, stem-set movement marked with maker's name and serial number as above, engine-turned rear cover, cuvette marked in part "Grand Prix Paris 1900, 16 Rubis, Balancier Compense, Spiral Breguet," in original leather-covered case, dia. 56 mm, 130g.