Bonds issued under Section 9.1-1 of this Article shall be payable solely from the revenue derived from the operation of the golf course, or courses, and shall not in any event constitute an indebtedness of the park district within the meaning of any constitutional or statutory limitation. It shall plainly state on the face of each bond that the bond has been issued under Sections 9.1-1 through 9.1-6 of this Article, and that it does not constitute an indebtedness of the park district within any constitutional or statutory limitation.
     The bonds shall be sold in such manner, to such persons and upon such terms as the board shall determine. If they are issued to bear interest at the maximum rate applicable at the time of issuance, they shall be sold for not less than par and accrued interest. If they are issued to bear interest at a rate less than the maximum rate applicable at the time of issuance, the minimum price at which they may be sold shall be such that the interest cost to the park district of the proceeds of the bonds shall not exceed the maximum rate applicable at the time of issuance, computed to maturity, according to the standard table of bond values.