The company is Danish, but they were sold in the US by a distributor. Yours is an older one, prior to the name change in 1811, or after 1936.
Jules Jurgensen was a watchmaking
company. It was founded by J?rgen J?rgensen in 1740 in Denmark
, when J?rgen J?rgensen went into partnership with Isaac Larpent, under the name "Larpent & J?rgensen".
Upon J?rgen's demise in 1811, his youngest son Frederik took over the company and changed the name to "Frederik J?rgensen".
Jules J?rgensen produced many watches in Switzerland. Jules J?rgensen was sold to a company in the US in 1936, and the watches were still produced in Switzerland until 1957, at which time it was first documented that the watches were made by others and have their name put on them.
The company was sold to Mort Clayman in 1974, a watch distributor in the US. According to the company's website, they Mort Clayman died in January 2010, and the company was closed by his family. In 2011, Dr. Helmut Crott, owner of Urban J?rgensen & S?nner acquired the rights from the Clayman family. https://en.wikipedia.org/wiki/Jules_Jurgensen
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