N.J. Stat. § 51:5-6
No person shall make for sale, sell or offer to sell or dispose of, or have in his possession with intent to sell or dispose of, any article of merchandise made in whole or in part of inferior metal, having deposited or plated thereon, or brazed or otherwise affixed thereto, a plate, plating, covering or sheet of silver, or of any alloy of silver, which article is known to the market as "silver plate" or "silver electroplate", or by any similar designation, and upon which article, or upon any tag, card or label attached thereto, or upon any box, package, cover or wrapper in which such article is incased or inclosed, shall be stamped, branded, engraved or imprinted the word "sterling", or the word "coin", either alone or in conjunction with any other words or marks.
N.J.S. § 51:5-6