N.Y. New York City Civil Court Law § 1603
It shall be unlawful for any person, other than a marshal of the city of New York, to hold himself out to the public as being a marshal or as being in any way authorized to act as a marshal or to perform the duties of a marshal; and it shall be unlawful for any person, other than a marshal, to exhibit any sign with the words "marshal's bureau" thereon or any other words or terms whereby the public may be led to believe that he is a city marshal or authorized to act as such, or that his office is the office of a city marshal. It shall be unlawful for any city marshal to permit any person, other than a city marshal, to perform any act in his name, or to sign or to use his name in the performance of any act which must be performed personally by a city marshal. Any person violating any of the provisions of this section shall be guilty of a misdemeanor and shall be punished by imprisonment for a term not exceeding one month or a fine not exceeding two hundred dollars for each offense.
N.Y. New York City Civil Court Law § 1603