The varying elements in Georg Jensen markings include the maker’s mark, silver content and design number.Earlier pieces may feature the Copenhagen “Three Towers” mark which includes the last two numbers of the production date and also the mark of the Copenhagen assay officer who verified the silver content.
Born in 1866, Jensen was the son of a knife grinder in the town of Raadvad just to the north of Copenhagen. Jensen began his training in goldsmithing at the age of 14 in Copenhagen. First as a modeller at the Bing & Grøndahl porcelain factory and, beginning in 1898, with a small pottery workshop he founded in partnership with Christian Petersen. Again the work was well received, but sales were not strong enough to support Jensen, by this point a widower, and his two small sons. Used from 1945 - 1951 for items that were sold in Copenhagen 10. In 1901, he abandoned ceramics and began again as a silversmith and designer with the master, Mogens Ballin.
This led Jensen to make a landmark decision, when in 1904, he risked what small capital he had and opened his own little silversmithy at 36 Bredgade in Copenhagen.
I have also included some artist marks with the dates they were used. I suggest using a 10x jewelers loop to make it easier to find a silver hallmark. Find the picture below that looks like the mark on your piece of silver. The date range for the silver hallmarks is located just below the pictures.
This is an overview of most of the marks Georg Jensen silver smithy has used since its inception in 1904.
Over the years, Jensen employed other designers—including Johan Rohde, Swedish prince Sigvard Bernadotte, and Harald Nielsen—who added the symmetry of Art Deco to the company’s repertoire.
Jensen died in 1935, but the company that bears his name lives on.
This was for many reasons; Some of the reasons were to keep their marks from being reproduced or to date their product.