21 Pa. Stat. § 285
All acknowledgments of written instruments made and certified in the manner and form in general use in the Commonwealth of Pennsylvania prior to the effective date of the act, approved the twenty-fourth day of July, one thousand nine hundred forty-one (Pamphlet Laws 490) , are hereby validated. All such instruments in writing so acknowledged and certified, may be offered in evidence without further proof. If such instrument so acknowledged and certified conveys, or relates to or concerns any interest in lands, it may be recorded in the recorder's office of the county or counties where such lands lie, and the record of same made before or after the passage of this act shall be constructive notice of all matters contained therein, and such record or exemplification of same, duly certified, shall be legal evidence in all cases in which the original would be competent evidence.
21 P.S. § 285