| A late 19th Century Swiss lever by Patek Philippe in a silver and niello open face case. Keyless gilt bar movement, going barrel with wolfs teeth winding work. Plain cock with long polished steel regulator. Compensation balance with blue steel overcoil hairspring. Club foot lever escapement, the lever
with counter balance extensions. Signed white enamel dial with subsidiary seconds, Roman and Arabic numerals, blue steel hands. Silver open face case decorated with geometric black niello work with a gold monogram applied to the back cover. Gold hinges, the silver cuvette signed "Henri Natermann 1889" and the movement engraved with the retailers name "Louis Chapelon a Geneve No. 1889"
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