Marking articles made of silver in combination with gold /
National Bureau of Standards.

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Corporate Author: United States. National Bureau of Standards.
Related Names: United States. National Bureau of Standards
Language(s): English
Published: Washington, D.C. : Department of Commerce, National Bureau of Standards, 1935.
Subjects: Goldwork > Goldwork / Identification > Goldwork / Identification / Standards > Goldwork / Identification / Standards / United States.
Silverwork > Silverwork / Identification > Silverwork / Identification / Standards > Silverwork / Identification / Standards / United States.
Note: "Approved by the American Standards Association as American Recommended Practice CS51-35."
"Effective date for clearance of existing stocks, July 1, 1936."
"Effective date for new production, July 1, 1935."
Physical Description: 9 pages ; 24 cm.
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