Dating tiffany silver marks
Hallmarks are applied with a hammer and punch, a process that leaves sharp edges and spurs of metal.
Therefore, hallmarking is generally done before the piece goes for its final polishing.
The head was encircled by a frame, optionally composed of convex, concave and straight lines.
In fact, the French standard for sterling silver is higher than that of other nations, requiring a silver content of 950 parts per thousand, or 95% silver.
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.
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