53. Right to elect to receive compensation for loss of earnings or
 loss of potential earning capacity rather than national
 superannuation---(1) No compensation for loss of earnings or loss of
 potential earning capacity shall be payable under section 52 (2) of this
 Act to any person who has attained the national superannuation
 qualification age unless that person has made an irrevocable election
 not to receive national superannuation in respect of any period for
 which that person is entitled to receive compensation for loss of
 earnings or loss of potential earning capacity under this Act.

   (2) Any election made under this section must be made---
   (a) Within 1 month of the commencement of the incapacity in respect of
         which the compensation is payable; or
   (b) At any time not later than 1 month before the attainment by the
         person of the national superannuation qualification age---

 whichever last occurs.