N.Y. Surr. Ct. Proc. Act § 1606

§ 1606. Proof of will by probate in non-domiciliary jurisdiction\n In the case of original probate of the will of a non-domiciliary\ntestator an authenticated copy of the will and of its probate or\nestablishment in the jurisdiction in which the will was executed shall\nbe sufficient proof of its contents and of compliance with the law of\nthe place of execution, if no objection is made thereto. If objection\nto the probate of such a will is filed this section shall not relieve\nproponent from offering competent proof of the contents and legal\nsufficiency of the will except that the original will need not be\nproduced unless directed by a court.\n