{"product_id":"ken-griffey-jr-autographed-1989-upper-deck-rookie-card-1-seattle-mariners-beckett-bas-19211211","title":"Ken Griffey Jr. Autographed 1989 Upper Deck Rookie Card #1 Seattle Mariners Beckett BAS #19211211","description":"\u003cp\u003e\u003cstrong\u003eCollector-Grade, Beckett-authenticated autographed rookie card memorabilia — signed by Ken Griffey Jr.\u003c\/strong\u003e A first-ballot Hall of Famer in 2016, Griffey was a 13-time All-Star and the 1997 AL MVP, finishing with 630 home runs and 10 Gold Gloves for the Seattle Mariners. His 1989 Upper Deck #1 rookie is the modern hobby icon, and a bold on-card signature pushes it into a premium tier for serious collectors.\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 (MLB):\u003c\/strong\u003e Ken Griffey Jr.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem:\u003c\/strong\u003e 1989 Upper Deck Rookie Card #1, hand-signed; Beckett BAS encapsulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthentication:\u003c\/strong\u003e Beckett Authentication Services (BAS) — Cert #19211211; tamper-proof holder\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eBacked by Beckett’s certification and sealed holder, this signed rookie is verified authentic and built for long-term confidence. A cornerstone piece tied to one of baseball’s greatest careers, it’s a trusted addition for Mariners fans and advanced memorabilia collectors alike.\u003c\/p\u003e","brand":"Mill Creek","offers":[{"title":"Default Title","offer_id":45695528108076,"sku":"257718","price":839.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/6196\/2028\/files\/OK_1_15_26_1336__82067.jpg?v=1782172628","url":"https:\/\/www.pristinemarketplace.com\/products\/ken-griffey-jr-autographed-1989-upper-deck-rookie-card-1-seattle-mariners-beckett-bas-19211211","provider":"Pristine Marketplace","version":"1.0","type":"link"}