(c) The State Treasurer shall, at least ten days before the date of issue of any bonds, advertise for proposals for bids for such portion of such bonds as has been determined to be issued at such date, such proposals to be under seal and opened in public by said Treasurer at some time and place by him appointed. Such bids shall contain proposals for the rate of interest to be paid on the interest coupons and shall be submitted in eighths of one per cent and multiples thereof. The State Treasurer shall have the power to reject any and all bids and to readvertise for the sale of such bonds.
(d) Such notes shall be sold at not less than par and accrued interest, shall be in such form as may be determined by the State Bond Commission and shall be signed in the name of the state by the State Treasurer or his deputy. They shall be sold at public sale on such notice and terms as said commission shall determine and the Treasurer shall have the power to reject any and all bids and to readvertise the sale of such notes.