25 Pa. Stat. § 2212
From and after the passage of this act, the President pro tempore of the Senate and the Speaker of the House of Representatives shall be and they hereby are authorized and directed, upon receipt of the returns of elections for Senators and Representatives in the General Assembly of Pennsylvania, held in the several counties of this Commonwealth, to issue to each person so returned as elected as Senator or Representative an appropriately engraved and engrossed certificate of his election. Said certificates to be signed by the said President pro tempore of the Senate and the Speaker of the House of Representatives, respectively, attested by the Chief Clerks of the respective Houses, and sealed with the seals hereinafter provided for.
25 P.S.§ 2212