Copies of the records of such patents to real estate, final certificates, patents, contracts of sale of the State of South Dakota, and certificates of discharge of veterans and persons in the military service of the United States as specified in § 43-28-2 and of the record of such duly certified copy of any of the same, shall, when duly certified by the custodian of such records, be admissible in evidence without further proof.
SDCL 43-28-3