BOYER, PARIS. A RARE SILVER OPEN FACE KEY WOUND CYLINDER POCKET WATCH WITH 18 EUROPEAN TIME ZONES
Signed Boyer Paris, circa 1870
Frosted gilt movement jewelled to the third, flat monometallic balance to cylinder escapement, white enamel dial, fixed outer Roman chapter ring inscribed EST OUEST and PARIS with pink arrow indicating Paris central time, inner concentric rotating rings with outer Arabic minutes and central Roman hours, the various cities arranged around the minute ring; Londres, Bordx., Nantes, Bristol, Lorient, Madrid, Brest, Milan, Bade, Strasbg., Nice, Cologne, Marsle, Lyon, Bruxles., circular silver case with gold hinges, engine turned (rubbed) back cover, wound through the hinged cuvette, case signed
46mm. diam.