(4) If, in the course of counting the votes the presiding officer discovers that he or she has omitted to affix his or her initials to any ballot paper, as provided by section 59(1) of this Act, and as indicated in the form set out as Form 12 in Schedule 3 to this Act, he or she shall, in the presence of the poll clerk and the agents of the candidates, affix his or her initials to such ballot paper, and shall count such ballot paper as if it had been initialled by him or her in the first place, provided that he or she is satisfied that the ballot paper is one that has been supplied by him or her and that such an omission has really been made, and also that every ballot paper supplied to him or her by the returning officer has been accounted for, as provided by subsection (1)(d).