All affidavits, acknowledgments, and other notarial acts, heretofore performed by notaries public of this Commonwealth within three months after the expiration of the time for which they have been commissioned to act, shall be valid to all intents and purposes the same as though they were performed during the time for which they were commissioned to act: Provided, however, That no case heretofore judicially decided, or now pending, shall be affected by this act.
57 P.S. § 64