Swiss 18 Carat gold and enamel neo classic dress watch Circa 1920

Gold keyless lever watch by Patek Philippe
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A fine Swiss 18 Carat yellow gold and enamel open faced neo classic lever dress watch, circa 1920. Sold on December 15th, 1920. Retailed by Davis & Hawley, Bridgeport & Waterbury, Connecticut.
Ultra thin, rhodium plated movement, going barrel, straight line equilibrated lever escapement, keyless winding, compensated balance, blued steel hairspring with a terminal curve, eight adjustments. White enamel dial with Greek style Arabic numerals, outer minutes track, subsidiary seconds at six o’clock and blued steel hands. Round shaped polished case, the back black champlevé enamel, with a decor of arabesques in ramolayé technique probably by L. Mayland, Geneva.
Dial and case signed, movement signed and numbered. Accompanied by an Extract from the Archives, dated March 12th, 2018.
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Diameter: 45 mm
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Signed: Patek Philippe & Cie Geneva-Switzerland
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In the 1920s, Patek Philippe produced some dress watches of which the cases were made using the ramolayé technique. The enamel background is black or blue decorated in gold. The production books of the manufactory mention that these works were entrusted to a craftsman enameller L. Mayland, Geneva. A few examples are today kept in the Patek Philippe Museum in Geneva. Another Patek Philippe dress watch representing a ‘Griffon’ is known. The case back is made with a mixture of more complex techniques, using the champlevé technique imitating the cloisonné work and the painting on enamel.
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Davis & Hawley, Bridgeport & Waterbury, Connecticut, USA. Davis & Hawley was one of the oldest jewellers in Bridgeport. They offered exceptional jewellery and timepieces in the New England area in the late 19th and early 20th centuries.
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Arabesques: Arabesque is originally an architectural term used for decorations with a graceful intertwining of leaves, flowers, animals and other figures in Arabic style. 
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Ramolayé-technique: A technique that is often used in jewellery, because it allows the creation of small patterns. The maker uses chisels. It is a technique that gives the piece a matte appearance.