New York Consolidated Laws, Surrogate's Court Procedure Act - SCP § 1606. Proof of will by probate in non-domiciliary jurisdiction

In the case of original probate of the will of a non-domiciliary testator an authenticated copy of the will and of its probate or establishment in the jurisdiction in which the will was executed shall be sufficient proof of its contents and of compliance with the law of the place of execution, if no objection is made thereto.  If objection to the probate of such a will is filed this section shall not relieve proponent from offering competent proof of the contents and legal sufficiency of the will except that the original will need not be produced unless directed by a court.