Dating mexican silver jewelry and eagle mark
After the adoption of the sterling standard, pieces were marked with "STERLING", the number "925" or the notation "925/1000".While American manufacturers did not apply assay marks, city marks or date marks, they did apply a maker's mark. The old hallmarks were as unique as today's logos, and disputes often arose when one company copied another's stamp.Marks indicate it is Britannia gauge silver made by (or for) Paul de Lamerie (taken to or) in London and dated 1732 (it could have been made a year or two earlier than 1732).Shows the hallmarks for two pieces of English silver (from the workshops of George Adams (1842) and Joseph & Albert Savory (1838)) each with a tally mark added (the letter B on one and a small dot on the other).
Silver items with a slightly lower grade of silver, 800 parts per thousand, are marked with the head of Minerva, next to which is a "2".
A silver object that is to be sold commercially is, in most countries, stamped with one or more silver hallmarks indicating the purity of the silver, the mark of the manufacturer or silversmith, and other (optional) markings to indicate date of manufacture and additional information about the piece.
In some countries, the testing of silver objects and marking of purity is controlled by a national assayer's office.
If there is ever a question about the content of a piece of jewelry, the manufacturer can be traced using the hallmark stamped on the piece....
US law requires a maker's mark in the form of a hallmark or registered trademark in addition to the quality mark if the goods are quality marked.
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The name of the artist or manufacturer may now be used for this." Between 18, Austria-Hungary and later, Hungary used the crescent moon crowned head of ancient Greek heroine Diana as the hallmarking symbol of legal silver alloys.