Section 91. Purchases and Sales of Government Securities. —

In order to achieve the objectives of the national monetary policy, the Bangko Sentral may, in accordance with the principle stated in Section 90 of this Act and with such rules and regulations as may be prescribed by the Monetary Board, buy and sell in the open market for its own account:

1. evidences of indebtedness issued directly by the Government of the Philippines or by its political subdivisions; and

2. evidences of indebtedness issued by government instrumentalities and fully guaranteed by the Government.

The evidences of indebtedness acquired under the provisions of this section must be freely negotiable and regularly serviced and must be available to the general public through banking institutions and local government treasuries in denominations of a thousand pesos or more.