N.Y. Real Property Law § 308: When certificate must be under seal

§ 308. When certificate must be under seal. 1. When a certificate of

acknowledgment or proof is made without this state, whether within or

without the United States, (a) if made by a judge or other presiding

officer of a court having a seal, or by the clerk or other certifying

officer thereof, such certificate must be under the seal of such court;

(b) if made by a commissioner of deeds appointed pursuant to the laws of

this state to take acknowledgments or proofs without this state, such

certificate must be under his seal of office; (c) if made by any officer

specified in subdivision one of section three hundred one of this

chapter, such certificate must be under the seal of the legation or

consulate to which such officer is attached.

2. Any certificate, required by the provisions of section three

hundred eleven of this chapter to be authenticated, must be so

authenticated, in addition to being under seal as provided in this

section.