If no legally acceptable bid is received for the bonds of a type II district advertised to be sold at public sale, said bonds or any of them may be sold without further advertisement at private sale within 30 days after the advertised date for public bidding; provided, however, that--
a. Said bonds shall not bear interest at a rate which is higher than the rate or maximum rate specified in the notice of sale, nor contain substantially different provisions from those specified in said notice;
b. Each block of bonds sold shall, considered together with any previous blocks sold, comply with the same provisions of law restricting maturities as apply to the entire issue; and
c. Any such sale or sales shall be made or confirmed within said 30 days by resolution of the board of education of the district adopted by the recorded roll call affirmative vote of two thirds of its full membership.
Such resolution shall set forth the date, maturities, interest rate and price of the bonds, and the name of the purchaser. Unless said bonds shall be sold to a board or other public body as provided in section 18A:24-46, the purchaser of bonds at private sale shall be required to deposit, with his bid, a certified or cashier's or treasurer's check, drawn upon a bank or trust company in an amount equal to 5% of the amount of bonds bid for, to be applied in accordance with the provisions of section 18A:24-41.