New York Laws
Article 13 - Silver, Gold and Diamonds
229-C - Marking Soldered Metal Sterling or Sterling Silver.

§ 229-c. Marking soldered metal sterling or sterling silver. Any
person, firm, corporation or association who makes or sells, or offers
to sell or dispose of, or has in his or its possession with intent to
sell or dispose of, any article of merchandise, whose component parts
are made of the same metal soldered together, which article is marked,
stamped, or branded with the words "sterling" or "sterling silver,"
unless all of said component parts shall contain not less than nine
hundred and twenty-five one-thousandths parts of pure silver, is guilty
of a misdemeanor.

Structure New York Laws