53 Pa. Stat. § 30908
Where the owner or other person, interested in the land thus sold, shall redeem the same, it shall be the duty of the city treasurer to acknowledge the receipt of the redemption moneys upon the margin of the acknowledgment of the treasurer's deed, as the same is entered and recorded in the prothonotary's office as aforesaid, and thereafter said deed shall be void and of no effect, and thereupon such owner or persons, interested as aforesaid, shall be entitled to have the treasurer's deed delivered up to him, her or them by the purchaser for cancellation. And it shall be the duty of the said treasurer to pay to said purchaser all the moneys he had paid at the time of sale, together with the ten percent penalty thereon, and it shall also be the duty of the said treasurer to enter upon the book of sales, kept by him as hereinbefore provided, an acknowledgment or receipt showing that the owner or party interested redeemed the same therein giving dates of redemption and amount of money received.
53 P.S. § 30908