French pocket watch with annual calendar on both sides Circa 1900

Silver annual calendar pocket watch with open face
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An extremely rare French pocket watch with annual manual calendar on both sides, circa 1900.
Movement with cylinder escapement. Enamel dial with Roman radial hours, outer minutes track with Arabic five minutes numerals, and red gold hands. Silver case, case edge with embossed numerals and days of the week on both sides, rotating bezels with the corresponding months and the date on both sides, and annual manual calendar.
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Diameter: 43 mm
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Weight: 60 g
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Signed: No name