53 Pa. Stat. § 53413
Whenever any borough shall issue improvement bonds in pursuance of this act, the secretary of the borough council shall keep a registry book, prepared by him, in which the said bonds shall be registered. Said registry shall show the date of the issue of the bond, the amount of the bond, the name and address of the person, firm, or corporation to whom the same is issued, which shall also be noted on the back of said bond: Provided, however, That the said bonds may be transferred at any time by proper adjustments; in which case the secretary shall make the proper entry of the said assignments in said registry book and on said bonds, and file said assignments among the records of the borough; and payment of said bonds and interest thereon shall be made only to the last registered owner.
53 P.S. § 53413