Marking of articles made wholly or in part of platinum.
Series: Voluntary product standard ; PS 69-76; Voluntary product standard -- PS 69-76.
Publisher: Dept. of Commerce, National Bureau of Standards : for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1977
Place of publication: Washington
Language: eng
Subjects: Jewelry -- Identification.; Platinum -- Identification.
Notes: CODEN: XNPSAX.