Marking of articles made of silver in combination with gold.
|Corporate Author:||United States.|
Washington : Dept. of Commerce, National Bureau of Standards : 1977.
Goldwork / United States /
Silverwork > Silverwork / United States > Silverwork / United States / Identification.
Approved by the American National Standards Institute April 18, 1977, as ANSI/VPS PS 68-76.
Supersedes Commercial Standards CS 51-35.
iv, 3 p. ;
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