{"product_id":"mark-mcgwire-jose-canseco-autographed-1988-classic-card-oakland-as-auto-grade-gem-mint-10-vintage-signature-beckett-bas-20454689","title":"Mark McGwire \u0026 Jose Canseco Autographed 1988 Classic Card Oakland A's Auto Grade Gem Mint 10 Vintage Signature Beckett BAS #20454689","description":"\u003cp\u003e\u003cstrong\u003eCollector Grade, Beckett-authenticated autographed memorabilia—dual-signed 1988 Classic Oakland A’s card by Mark McGwire and Jose Canseco, Auto Grade Gem Mint 10.\u003c\/strong\u003e As the “Bash Brothers,” they powered the Oakland Athletics to the 1989 World Series title. McGwire captured the 1987 AL Rookie of the Year and finished with 583 home runs, while Canseco won the 1988 AL MVP and became MLB’s first 40–40 player that same season.\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\u003eAthletes:\u003c\/strong\u003e Mark McGwire \u0026amp; Jose Canseco\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eItem:\u003c\/strong\u003e 1988 Classic Oakland A’s trading card with vintage dual signature; Beckett BAS slabbed; autograph grade Gem Mint 10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuthentication:\u003c\/strong\u003e Beckett Authentication Services (BAS) COA and tamper-proof encapsulation; Cert #20454689\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCertified by Beckett BAS, this verified authentic piece carries a Gem Mint 10 autograph grade and comes secured in a BAS holder—protecting the signatures and supporting long-term value. A sharp, dual-signed snapshot of the Bash Brothers era for serious MLB collectors and Oakland A’s fans.\u003c\/p\u003e","brand":"Mill Creek","offers":[{"title":"Default Title","offer_id":45806770094124,"sku":"266330","price":339.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/6196\/2028\/files\/OK_7_14_26_2000__58605.jpg?v=1784157464","url":"https:\/\/www.pristinemarketplace.com\/products\/mark-mcgwire-jose-canseco-autographed-1988-classic-card-oakland-as-auto-grade-gem-mint-10-vintage-signature-beckett-bas-20454689","provider":"Pristine Marketplace","version":"1.0","type":"link"}