A bond issued under this part: may be in bearer form or coupon form; may be registrable as to principal alone or as to both principal and interest; and is a security under § 8–102 of the Commercial Law Article, whether the bond is one of a class or series or is divisible into a class or series of instruments. A bond shall be signed manually or in facsimile by the chief executive officer of the municipality. The clerk or other similar administrative officer of the municipality shall attest to and affix the seal of the municipality to each bond. An officer’s signature or countersignature on a bond remains valid if the officer ceases to be an officer before delivery of the bond. A bond shall mature not later than 30 years after the date of issuance. A municipality may sell bonds: at a public or private sale; and in any manner and on any terms that the governing body of the municipality considers best. A contract to acquire property may provide that payment shall be made in bonds. Bonds are exempt from §§ 19–205 and 19–206 of this article.