The watch has an interesting history. Jürgensen, like Breguet, bought back his watches, which were of such high quality that they could easily be sold again. This watch was bought back by Jür-gensen in 1838, and resold in February 1840 to Professor Olufsen, a professor of Astronomy at the Copenhagen Observatory. We would like to express our gratitude to Mr. John Knudsen, the author of a monograph of the Jürgensen family, who kindly pro-vided us with the above information. Urban Jürgensen (1776-1830) Born in Copenhagen in 1776, Urban Jürgensen was the son of Jürgen Jürgensen, a well-known watchmaker who furnished watches both to the Court and the Navy. Jürgen Jürgensen was the head of the most reputed horological firm in Denmark at the time. It was there that his son Urban completed his apprenticeship. During the course of his career, Urban Jürgensen traveled to Le Locle, Geneva, Paris and London, constantly studying and seeking to perfect his knownledge of horology. His father, being the Danish agent for Jacques-Frédéric Houriet, Urban worked for a time with the eminent horologist. In Paris, he worked with Ferdinand Ber-thoud and Abraham-Louis Breguet. Wishing to learn more about the construction of marine chronometers, Jürgensen went next to London, to the workshop of the celebrated watchmaker Arnold.