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Silver Purity

Millesimal Fineness


Millesimal fineness is the system denoting the purity of silver, gold and platinum alloys by parts per thousand of pure metal by mass in the alloy. e.g. the sterling silver standard has a minimum millesimal fineness of 925.


Millesimal Fineness Associated With Silver

  • 999 - fine silver used in bullion bars
  • 980 - common standard used in Mexico 1930 - 1949
  • 958 - equivalent to Britannia silver*
  • 950 - equivalent to French 1st Standard
  • 925 - equivalent to Sterling silver
  • 900 - equivalent to USA 'Coin silver'
  • 875 - used in the former USSR
  • 830 - used in older Scandanavian silver
  • 800 - German standard silver after 1884; Egyptian silver


* Britannia standard silver was introduced by the British Government in 1697. However, this has only been denoted by the silver hallmark 958 since the hallmarking changes introduced in 1999.


 
Andrew Campbell started trading in antiques during the 1970s. Initially, Andrew lived in the South of England, travelling the country, searching for items of silver to buy. Andrew sold these items at various London markets and antique fairs. Over time, and through selling at a range of venues, Andrew built up a large and diverse customer base from private buyers to national and international trade customers.
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