(a) An authority shall have the power to issue bonds, including refunding bonds: Provided, however, That the principal, interest and other charges thereon be payable solely and exclusively from repayment or sale of any residential loan notes (including amounts received by the authority from the sale of real estate or other collateral given for such loans) purchased by the authority or moneys contributed to an authority by a county or a municipality, investment income or proceeds of refunding bonds.(b) The bonds shall be sold at public or private sale for such prices as the authority may determine, mature at such time or times, bear interest at such rate or rates, be in such form, contain such provisions for redemption, and be entitled to such priorities on the revenues and receipts of such authority, and contain such other terms all as the authority may determine. The bonds and any appurtenant coupons may be signed manually by or may bear the facsimile signature of such officer or officers as the authority may determine.1953, July 28, P.L. 723, No. 230, art. XXII-A, § 2205-A, added 1981, Nov. 5, P.L. 330, No. 120, § 2, imd. effective.