42 Pa.C.S. § 5528

Except as otherwise provided by section 17 (relating to periods of limitation) of the act of August 9, 1971 (P.L.286, No.74), known as the "Disposition of Abandoned and Unclaimed Property Act," an action for escheat, or for payment into the State Treasury without escheat, must be commenced within 15 years after the property sought in such action shall have first escheated or become escheatable or payable into the State Treasury under any statute.