ยง  229-f. Marking metal placed on leather or other substances, 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  comprised
  of  leather,  shell, ivory, celluloid, pearl, glass, porcelain, pottery,
  steel, or wood to which is applied or attached a metal mounting  marked,
  stamped  or  branded with the words "coin" or "coin silver," unless said
  applied or attached metal mounting 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.