Dating hallmarks Free sxy cam2cam
For estate jewelers and jewelry historians, hallmarks provide for an extra source of information to accurately date a jewelry object and determine by whom it was made.
The most encountered hallmark on jewelry is undoubtedly the "purity" mark which indicates the total amount of gold or silver used to manufacture a coveted jewel.
The frustrating part stems from several factors, beginning with missing hallmarks on most American-made items, which is typical of the Victorian era.
Hallmarks provide collectors with a myriad of information, such as what type of metal was used to make the item, plus when and where it was made.
The remainder is usually copper with very small amounts of iron, lead and traces of other metals.
King Hiero II of Syracuse gave Archimedes the assignment to investigate the purity of a newly commissioned golden wreath, believing silver was added to the gold content.
The famous story ends with Archimedes running through the streets shouting "eureka, eureka" after he found a means to expose the deceit while he sat in a bath tub.
The Danish mark, 826S was used until about 1915 when silversmiths raised their silver content to 830 and eventually to 925.
Georg Jensen did not switch to the sterling standard until 1927 although he occasionally made special orders in 925S for the American market much earlier.