law: 72. Impression of signature on securities.-
  (1) The signature of the person authorised to sign Port Trust securities on behalf of the Board may be printed, engraved or lithographed or impressed by such other mechanical process, as the Board may direct on such securities.
  (2) A signature so printed, engraved, lithographed or otherwise impressed shall be as valid as if it had been inscribed in the proper handwriting of the person so authorised.