Mont. Code Ann. § 30-1-202
30-1-202 Prima facie evidence by third-party documents
30-1-202 . Prima facie evidence by third-party documents. A document in due form purporting to be a bill of lading, policy or certificate of insurance, official weigher's or inspector's certificate, consular invoice, or any other document authorized or required by the contract to be issued by a third party shall be prima facie evidence of its own authenticity and genuineness and of the facts stated in the document by the third party.