Swiss sterling silver hunting cased pocket watch Circa 1870

Sterling silver pocket watch
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A very fine and important, sterling silver hunting cased keyless pocket watch with split-seconds chronograph. Made in Geneva for the American market, Circa 1870.
Four-body, massive and bassine et filets case entirely decoratively engraved with scrolls and foliage, engine-turned hinged front cover and case back and glassed inner cover to view the movement.
White enamel dial with outer one-fifth seconds track with five-second Arabic markers, sunk subsidiary dials for the seconds at 9 0’clock and for the minutes and hours at 3 o’clock and blued steel spade hands.
Nickel plated movement with three quarter plate, Geneva Striping decoration, 23 jewels, counterpoised straight-line lever escapement, cut bimetallic balance, Breguet balance spring and split seconds push piece in the band.
Dial and movement signed. numbered in the case.
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Diameter: 53 mm
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Signed: Tiffany & Co., New York
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This incredibly well-preserved Tiffany and Co. split second chronograph pocket watch with regulator dial and silver and pink gold case is amongst the rarest and most intricate watches produced at the Tiffany and Co. factory. The watch features a nearly identical movement and dial layout as Patek Philippe No. 65409.