{"product_id":"ken-griffey-jr-autographed-1988-cal-league-rookie-card-34-seattle-mariners-auto-grade-gem-mint-10-beckett-bas-19823430","title":"Ken Griffey Jr. Autographed 1988 Cal League Rookie Card #34 Seattle Mariners Auto Grade Gem Mint 10 Beckett BAS #19823430","description":"\u003cp\u003e\u003cstrong\u003eCollector Grade autographed and signed Ken Griffey Jr. 1988 Cal League Rookie Card #34 memorabilia—Beckett BAS Auto Grade Gem Mint 10, securely encapsulated (Cert. #19823430).\u003c\/strong\u003e A first-ballot Hall of Famer inducted in 2016, Griffey launched 630 home runs (7th all-time). He won the 1997 AL MVP, earned 13 All-Star selections, and claimed 10 Gold Gloves while starring for the Seattle Mariners.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCollector's Highlights:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAthlete:\u003c\/strong\u003e Ken Griffey Jr.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eItem:\u003c\/strong\u003e 1988 California League Rookie Card #34, hand-signed; BAS encapsulated; Auto Grade Gem Mint 10; Seattle Mariners; BAS #19823430\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuthentication:\u003c\/strong\u003e Beckett Authentication Services (BAS) — tamper-proof holder with Gem Mint 10 autograph grade and matching certification number\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eVerified authentic by Beckett, this early-career Griffey rookie issue delivers long-term collector confidence and real hobby value—an iconic signed card tied to one of baseball’s greatest careers.\u003c\/p\u003e","brand":"Mill Creek","offers":[{"title":"Default Title","offer_id":45540467703852,"sku":"262700","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/6196\/2028\/files\/OK_5_12_26_1170__05350.jpg?v=1778716356","url":"https:\/\/www.pristinemarketplace.com\/products\/ken-griffey-jr-autographed-1988-cal-league-rookie-card-34-seattle-mariners-auto-grade-gem-mint-10-beckett-bas-19823430","provider":"Pristine Marketplace","version":"1.0","type":"link"}