21 Pa. Stat. § 282
In all cases where mortgages on real estate situate in this Commonwealth and the bonds accompanying the same are held by fiduciaries located in or resident of any state, territory or possession of the United States or of any foreign country, of have been held and owned by residents of any other state, territory or possession of the United States of America, or of any foreign country, and the said owners have died and letters testamentary or of administration, or other authority have granted by or under the laws of such other state, territory or possession of the United States of America, or of any foreign country, and such fiduciaries, executors, or administrators have caused writs of scire facias to issue on such mortgages and judgments to be entered thereon or have caused judgments to be entered on the bonds accompanying the said mortgages, and the real estate described in said mortgages has been sold by the sheriff in pursuance of writs of fieri facias, venditioni exponas, or levari facias issued on such judgments, the sales so made and every of them, shall and the same are hereby declared to be valid and effectual to vest in the purchasers at such sales the title to the said real estate, with the same force and effect as if the said judgments had been entered and said writs of execution had been issued by fiduciaries located or resident in this Commonwealth or by executors or administrators to whom letters had been granted by the register of wills of a county in this Commonwealth.
The provisions of this act shall not apply to any case which shall have heretofore been judicially adjudicated.
21 P.S. § 282