53 Pa. C.S. § 8149
(a) Securities.--Bonds or notes issued pursuant to this subpart, including tax anticipation notes, which have all the qualities and incidents of securities under Title 13 (relating to commercial code), shall be negotiable instruments.
(b) Commercial paper.--Such bonds and notes issued pursuant to this subpart which are not securities shall have all the qualities and incidents of commercial paper under Title 13 and shall be negotiable instruments notwithstanding any references in them to the terms of the authorizing bond ordinance or any trust indenture, deed of trust or other agreement, or any variations in the rate of interest provided in the note, or any limitation upon the funds from which or limitations as to the bonds with which the notes may be paid or any restriction upon the remedies of the holders.
53 Pa.C.S. § 8149