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After making his debut far too late for 2015 releases, Corey Seager RCs are available across 2016 releases.
The following list includes base Seager cards with the RC tag in the Beckett database. Inserts and parallels are not included. Rankings are based on value, primarily using the Beckett Price Guide.
1. 2016 Topps Dynasty Corey Seager RC Auto Patch #AP-CS1 to #AP-CS7 (7 different)
Parallels:
Silver (/5), 1/1 (1/1)
2. 2016 Panini National Treasures Corey Seager RC Auto Patch #152 /99
Parallels: Purple (/49), Gold (/25), Black (/10), Green (/5), Brand Logo Blue (1/1), Laundry Tags Blue (1/1), Printing Plates Black (1/1), Printing Plates Cyan (1/1), Printing Plates Magenta (1/1), Printing Plates Yellow (1/1)
3. 2016 Topps Triple Threads Corey Seager RC Auto Triple Mem #RFP-CS
Parallels:
Silver (/75), Emerald (/50), Onyx (/35), Printing Plates Black (1/1), Printing Plates Cyan (1/1), Printing Plates Magenta (1/1), Printing Plates Yellow (1/1), Ruby (1/1), Wood (1/1)
4. 2016 Panini Flawless Corey Seager Rookie Card #87 /20
Parallels:
Ruby (/15), Sapphire (/10), Emerald (/5), Black Diamond (1/1)