(1) United States Government, a state of the United States and/or Commonwealth of Puerto Rico bonds, notes, certificates, or other evidences of indebtedness to the payment of which the full faith and credit of the United States Government, a state of the United States or the Commonwealth of Puerto Rico is pledged and bonds, notes, certificates of indebtedness, or other evidences of indebtedness of governmental agencies which are unconditionally guaranteed by the United States Government;
(2) bonds of any State of the United States or the Commonwealth of Puerto Rico;
(3) bonds or other evidences of indebtedness of the Virgin Islands or of any agency thereof including notes issued in anticipation of the issuance of bonds, interim bonds, receipts, certificates of indebtedness or other obligations, the payment of the principal and interest of which is provided for other than by direct taxation, or to the payment of which the full faith and credit of the Virgin Islands is pledged;
(4) securities approved from time to time by the Secretary of the Treasury of the United States of America as collateral security for special deposits of public moneys under the Act of Congress of The United States approved September 24, 1917, as amended.
(5) Federal Housing Authority mortgages issued and secured under the rules and regulations of the Department of Housing and Urban Development and Veterans Administration mortgages issued under the rules and regulations of the Veterans Administration and unconditionally secured by the United States Government; Provided, That not more than 50 percent of the total collateral bond by a depository may be constituted of the types of securities described in this subdivision. The Commissioner of Finance with the approval of the Governor, may from time to time prescribe such other terms and conditions for the acceptance of collateral under this subdivision as he may determine necessary for the protection of Government.
(6) irrevocable letters of credit issued by entities sponsored or established by the United States Government, or its agencies and instrumentalities, including irrevocable letters of credit issued by the Federal Home Loan Bank of New York.