111. Evidence of conviction of subordinate military court

The original proceedings of a subordinate military court purporting to be signed by the president thereof and being in the custody of an officer thereof shall be deemed to be of such a public nature as to be admissible in evidence on their mere production from such custody; and any copy purporting to be certified by the officer to be a true copy of such proceedings or of any part thereof, shall be admissible in evidence without proof of the signature of the president of the subordinate military court.