Proof that book is a banker’s book
172.—(1)  A copy of an entry in a banker’s book is not to be received in evidence under this Part unless it is first proved that —
(a)the book was, at the time of the making of the entry, one of the ordinary books of the bank;
(b)the entry was made in the usual and ordinary course of business; and
(c)the book is in the custody or control of the bank.
(2)  Such proof may be given by an officer of the bank and may be given orally or by an affidavit sworn before any commissioner for oaths or person authorised to take affidavits.