Professionally authenticated by PSA/DNA, to verify go to their website and type in this #AF03867! I Just got these back from PSA/DNA so they might not be on their website yet for a couple of weeks. The item "1988 World Series Team Signed Program Gibson Lasorda Signed Program PSA/DNA (A)" is in sale since Thursday, December 20, 2018. This item is in the category "Sports Mem, Cards & Fan Shop\Autographs-Original\Baseball-MLB\Programs".The seller is "dctradingcards" and is located in Canyon Country, California. This item can be shipped worldwide.