The term bonds, as used in this chapter, includes bonds and refunding bonds, unless otherwise provided.

Bonds shall be of the denomination of not less than one hundred dollars ($100) nor more than one thousand dollars ($1,000) each.

Bonds shall be signed by the president and attested by the county auditor of the principal county.

Bonds shall be numbered consecutively in the order of their maturity.

Bonds shall bear interest at a rate not to exceed 8 percent per year, payable on the first day of January and the first day of July in each year at the office of the county treasurer upon the presentation of the proper coupons therefor.

Coupons for each installment of interest shall be attached to the bonds and shall bear the facsimile signature of the county auditor of the principal county.

The principal of bonds shall be made payable on the first day of July, or the first day of January in such years as the board prescribes.