VACHERON & CONSTANTIN. A SILVER KEYLESS WIND OPEN FACE CHRONOGRAPH POCKE

VACHERON & CONSTANTIN. A SILVER KEYLESS WIND OPEN FACE CHRONOGRAPH POCKET WATCH ISSUED FOR THE USA ENGINEERS CORPS Date: Circa 1920 Movement: Gilt 3/4 plate 20-jewel Swiss lever, cut and compensated bi-metallic balance, swan neck regulation, column wheel chronograph, No.381423 Dial: White, Arabic numerals, black outer 1/5th second divisions, blued steel Mercedes style hands, centre chronograph, subsidiary seconds at 6 Case: Polished round, back engraved ‘Corps of Engineers U.S.A No.1225’, No.235170 Signed: Case, dial & movement Size: 52mm