All bonds authorized by the vote of the electors upon a distinct proposition submitted unto them or authorized by any governing board where no popular election is required by law and for one purpose, shall constitute a distinct series, the bonds of which may be issued by any such governing board in separate issues, if deemed by such governing board to be to the best interest of the issuer so to do. The bonds of each series and of each of the issues thereunder shall be distinguished upon the face of each of such bonds by some distinguishing numbers or letters or descriptive language as may be determined by any such governing board; and the bonds of each such issue shall be numbered from one upwards consecutively.
Idaho Code § 57-212