ยง 229-d. Marking soldered metal coin or coin 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 "coin" or "coin silver," unless all of said
  component parts shall contain not less than nine hundred one-thousandths
  parts of pure silver, is guilty of a misdemeanor.
Structure New York Laws
Article 13 - Silver, Gold and Diamonds
229-A - Marking Certain Articles, Silver, Sterling Silver or Solid Silver.
229-B - Selling Silverware Marked Coin or Coin Silver.
229-C - Marking Soldered Metal Sterling or Sterling Silver.
229-D - Marking Soldered Metal Coin or Coin Silver.
229-E - Marking Metal Placed on Leather or Other Substances Sterling or Sterling Silver.
229-F - Marking Metal Placed on Leather or Other Substances, Coin or Coin Silver.
229-G - Marking Watch Cases Sterling or Sterling Silver.
229-H - Marking Watch Cases Coin or Coin Silver.