What: 2017 Leaf Metal Sports Heroes Pre-production Proofs
Box basics: Three 1/1 proof cards per box
What’s buzz-worthy: Every card that made its way into boxes of the recently released 2017 Leaf Metal Sports Heroes gets a 1/1 unsigned equivalent here. Every card in every box will be encapsulated by BGS. For more on what was in the standard release, click here.
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