Swiss gold watch with split seconds chronograph Circa 1891

Very fine gold open faced pocket watch
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Early, very fine Patek Philippe anker chronometer with split seconds chronograph “Rattrapante”, circa 1891.
An 18 carat pink gold, à goutte hunter cased, case number 204897, Patek Philippe punch, dome signed and numbered no. 90021.
Signed anker chronometer movement with big golden screwed balance, split seconds chronograph, double signature Patek Philippe & Co – Hennegen, Bates & Co, Baltimore on the main plate. Genèva decoration, special lever, signed, original enamel dial of undamaged condition, rare red minutes and red seconds, good condition of preservation, high quality Patek Philippe collector’s watch.
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Diameter: 50 mm
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Weight: 110 g
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Signed:  Patek Philippe   Genève