Bonds of the authority may be sold from time to time as the board of directors may deem advantageous; provided, that the aggregate principal amount of bonds of the authority which may be issued under this article shall be limited to $20,000,000.00, but the said limitation shall not apply to refunding bonds which may be issued under this article and also shall not apply to bonds of the authority which may be issued under any other act which may at any time hereafter be enacted.

The bonds shall be in such forms and denominations and of such tenor and maturities, shall bear such rate or rates of interest payable and evidenced in such manner and may contain other provisions not inconsistent with this article as may be provided in the resolution or resolutions of the board of directors of the authority wherein the bonds are authorized to be issued; provided, that none of the bonds shall have a specified maturity date later than 30 years after its date. Such bonds may be in bearer form with interest coupons or registered as to principal and interest or may be registered as to principal only and, upon surrender and endorsement or assignment, may be exchanged for a like bearer or registered security for a reasonable fee and upon such signature guarantees and other assurances as the authority may prudently require.

The bonds and coupons shall be construed to be negotiable instruments although payable from a specified source as provided in this article, and such bonds and coupons shall have and are hereby declared to have all the qualities and incidents of negotiable instruments under the negotiable instruments law of the state.

The authority may at its election retain in the resolution or resolutions under which any of the bonds are issued an option to redeem all or any thereof and at such redemption price or prices and after such notice or notices and on such terms and conditions as may be set forth in said resolution or resolutions and as may be briefly recited on the face of the bonds with respect to which such option of redemption is retained. With respect to those of the bonds having stated maturities more than 10 years after the date thereof, the authority shall retain in the resolution or resolutions authorizing their issuance an option to redeem at the expiration of the tenth year following the date thereof and on any interest payment date thereafter all or any of the bonds having stated maturities after the expiration of the tenth year following their date, at such redemption price or prices and after such redemption notice or notices and on such terms and conditions as may be set forth in said resolution or resolutions and briefly recited on the face of the bonds.