Fla. Stat. § 170.17
All bonds issued under this chapter shall be the denomination of $500, or some multiple thereof, and shall bear interest as provided in s. 215.84 until paid in full, payable annually or semiannually, and both principal and interest shall be payable at such place or places as the governing authority may determine. The form of such bonds shall be fixed by resolution of the governing authority of the municipality, and said bonds shall be signed by the mayor or chief executive officer of the municipality and the clerk or other like officers thereof, under the seal of the municipality; the coupons, if any, shall be executed by the facsimile signatures of said officers. The delivery of any bond and coupon so executed at any time thereafter shall be valid although before the date of delivery the person signing such bond or coupons shall cease to hold office.
Fla. Stat. § 170.17