William Karlsson/Theodore Cards
The complete William Karlsson/Theodore checklist: 1 card — cards spanning 2020.
Data updated June 21, 2026.
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hockey
2020
Upper Deck 20201 card
Frequently Asked Questions about William Karlsson/Theodore Cards
Does William Karlsson/Theodore have a rookie card?
No confirmed William Karlsson/Theodore rookie cards are currently in the AgentGrail catalog. The catalog covers 1 William Karlsson/Theodore cards in total. Check back as we continue to add new sets.
What years were William Karlsson/Theodore cards made?
The AgentGrail catalog includes William Karlsson/Theodore cards from 2020, totaling 1 cards across all sets and brands. The earliest cards date from 2020 and the most recent are from 2020.
Where can I buy William Karlsson/Theodore cards?
eBay is the largest marketplace for William Karlsson/Theodore hockey cards, offering both raw and graded (PSA, BGS, SGC) copies. Use the "Find on eBay" buttons on this page to search current listings. For investment-grade copies, look for PSA 10 certified cards.
Answers are grounded in AgentGrail catalog data and recent eBay market comps.
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Compiled by the AgentGrail team · Data refreshed June 21, 2026