53 Pa. Stat. § 16999.14
If any bond issued under this act shall become mutilated or be destroyed, stolen or lost, the city shall execute and any sinking fund depository, fiscal agent or trustee for bondholders shall, if required, authenticate and deliver a new bond of like series and principal as the bond so mutilated, destroyed, stolen or lost, upon surrender and cancellation of such mutilated bond, if any, or in lieu of and in substitution for the bond destroyed, stolen or lost, upon filing with the fiscal agent or trustee, evidence satisfactory to it, that such bond has been destroyed, stolen or lost and proof of ownership thereof and upon furnishing of satisfactory indemnity and complying with such other reasonable regulations as the city shall prescribe, and paying any reasonable expenses, including counsel fees, as the city or the fiscal agent or trustee may incur. Mutilated bonds, if surrendered, shall be cancelled.
53 P.S. § 16999.14