Case material: Steel; Charge: Manual; Conditions: New Presentation condition : With dealer guarantee ; Price on request Gmtbroker Reference: WW1ArgentiumRuthenium Bell & Ross WW1 Argentium Ruthenium Complete Details: As part of a  Bell & Ross Pocket Watch series, this watch is reminiscent of the first pilot watches of the 1920's and is designed to resemble the dimensions of a fob (pocket watch). Case made of argentium, a sterling silver alloy with superior brightness and high tarnish resistance. Ruthenium (dark grey) dial with silver-tone Arabic numerals, index hour markers, and hands. Small seconds subdial located at 12 o'clock. This watch is also known as WW1ArgentiumRuthenium