N.Y. Real Prop. Tax Law § 206

§ 206. Execution of instruments. Whenever the board is authorized or\nrequired by law to execute an instrument, such instrument shall be\nexecuted by affixing the name of the board and, underneath such name,\nthe signature of one or more of the members of such board or such\nofficer or employee of the state board of real property tax services as\nmay be designated by the board. No acknowledgment of the execution of\nany such instrument shall be necessary for the purpose of recordation or\nfor any other purpose.\n