Technical interesting Danish gold repeating watch Circa 1813

Gold quarter repeating cylinder watch by Fredrik Jürgensen
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Rare and technical interesting Danish 18 carat gold open faced quarter repeating cylinder pocket watch, circa 1813. Cylinder escapement, repeating the hours and quarter hours. Silver dial with Roman hours, an outer dot minute track, the centre engine turned and steel Breguet hands. The engine turned case with polished bezels and a reeded band. Cuvette signed and numbered, movement signed.
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Diameter: 58 mm
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Weight: 151 g
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Signed: Fredrik Jürgensen Kiöbenhavn (Copenhagen)
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Fredrik Jürgensen (1785-1845) was the youngest son of Jürgen Jürgensen (1745-1811) and was born in Copenhagen into a dynasty of fine watchmakers. He apprenticed to his famous older brother Urban Jürgensen (1776-1830) in 1801, whom he worked with until 1809 in Le Locle, Switzerland, in April of that year he went to Geneva. In 1811 Fredrik was recalled to Copenhagen on his father’s death. On May 15th, 1811 he was appointed watchmaker to the court as the successor of his father. It is reported Jürgensen made only around 500 pocket watches between 1811 and 1843, typically with a double wheel duplex escapement, but also with a large steel cylinder escapement. The present timepiece is the earliest known numbered pocket watch by Fredrik Jürgensen, No. 4033. The earliest noted pocket watch was numbered 4049. He probably started his numbering with the number 4001.