(a) The board shall adopt a seal, which may be either an engraved or an ink stamped seal, with the words "Board of Landscape Architects, State of Georgia" or such other device as the board may desire included thereon, by which it shall authenticate the acts of the board.

(b) Copies of all records and papers in the office of the board, certified by the signature of the chairman of the board, shall be received in evidence in all cases equally and with like effect as the originals.