Swiss rose gold pocket watch with chronograph Circa 1870

Open faced pocket watch by Longines
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A fine Swiss gentleman’s pocket watch with chronograph, circa 1870.
18 carat rose gold case with applied monogram, signed gold dome and pusher for chronograph via pendant. Enamel dial with Arabic numerals, auxiliary seconds, 30 min. counter, outer chronograph scale 0-300, gold Louis XV hands and centre chronograph hand. 4/5 plate movement, frosted, gilt, ground chronograph steel parts, ratchet wheel, lever escapement, gold screw compensation balance, blued balance spring, cam type fine adjusting device.
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Diameter: 52 mm
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Weight: 108 g
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Signed: Longines