Where:
(a) the widow of a deceased male pensioner is entitled to a pension under subsection 57(3A); and
(b) there is paid into an account with a bank, credit union or building society (in this section called the financial institution ) an amount purporting to be an instalment of pension payable to the pensioner in respect of a period in respect of which a pension is payable to the widow under subsection 57(3A); and
(c) the financial institution pays, out of that account, to the widow an amount not exceeding the amount so paid into the account;
then, in spite of any other law:
(d) the financial institution is not liable to the Commonwealth, the personal representative of the deceased pensioner or anyone else for any loss incurred because of the payment of that amount to the widow; and
(e) an amount equal to the amount so paid by the financial institution to the widow must be set off against any amount of pension payable to her under subsection 57(3A).