La. R.S. 9:2759

When an original title, by authentic act, or by private signature duly acknowledged, has been recorded in any public office, by an officer duly authorized, either by the laws of this State, or of the United States, to make such record, the copy of such record, duly authenticated, shall be received in evidence, on proving the loss of the original, or showing circumstances supported by the oath of the party, to render such loss probable.