N.Y. Exec. Law § 137

§ 137. Statement as to authority of notaries public. In exercising his\npowers pursuant to this article, a notary public, in addition to the\nvenue of his act and his signature, shall print, typewrite, or stamp\nbeneath his signature in black ink, his name, the words "Notary Public\nState of New York," the name of the county in which he originally\nqualified, and the date upon which his commission expires and, in\naddition, wherever required, a notary public shall also include the name\nof any county in which his certificate of official character is filed,\nusing the words "Certificate filed .......... County." A notary public\nwho is duly licensed as an attorney and counsellor at law in this state\nmay in his discretion, substitute the words "Attorney and Counsellor at\nLaw" for the words "Notary Public." A notary public who has qualified or\nwho has filed a certificate of official character in the office of the\nclerk in a county or counties within the city of New York must also\naffix to each instrument his official number or numbers in black ink, as\ngiven to him by the clerk or clerks of such county or counties at the\ntime such notary qualified in such county or counties and, if the\ninstrument is to be recorded in an office of the register of the city of\nNew York in any county within such city and the notary has been given a\nnumber or numbers by such register or his predecessors in any county or\ncounties, when his autographed signature and certificate are filed in\nsuch office or offices pursuant to this chapter, he shall also affix\nsuch number or numbers. No official act of such notary public shall be\nheld invalid on account of the failure to comply with these provisions.\nIf any notary public shall wilfully fail to comply with any of the\nprovisions of this section, he shall be subject to disciplinary action\nby the secretary of state. In all the courts within this state the\ncertificate of a notary public, over his signature, shall be received as\npresumptive evidence of the facts contained in such certificate;\nprovided, that any person interested as a party to a suit may\ncontradict, by other evidence, the certificate of a notary public.\n