This XL custom jersey was signed by Philadelphia Phillies Lenny Dykstra and inscribed 4 in the presence of a JSA Representative and Guaranteed to be Authentic under their WITNESSED PROTECTION PROGRAM. It come's with a Certificate of Authenticity from JSA with their matching numbered hologram affixed to the jersey #WP001496. Atkins Sports Memorabilia Guarantees the Authenticity for life. ( Stock #2526 )