Professor Oak's New Theory cards.
updated Aug 14, 2026
Every Professor Oak's New Theory card we price, most valuable first. Prices are what copies actually sold for, updated daily.
2Professor Oak's New TheoryHeartGold SoulSilver · 101/123$6.92
1Professor Oak's New Theory (League Promo)League & Championship Cards · 101/123$49.95
3Professor Oak's New TheoryCall of Legends · 83/95$3.46Professor Oak's New Theory (League Promo)$49.95LEAGUE & CHAMPIONSHIP CARDSProfessor Oak's New Theory$6.92HEARTGOLD SOULSILVERProfessor Oak's New Theory$3.46CALL OF LEGENDS
Professor Oak's New Theory (Shuto Itagaki)$1.37WORLD CHAMPIONSHIP DECKS
Professor Oak's New Theory (Yuta Komatsuda)$0.90WORLD CHAMPIONSHIP DECKS
Professor Oak's New Theory (Ross Cawthon)$0.85WORLD CHAMPIONSHIP DECKS
Professor Oak's New Theory (David Cohen)$0.76WORLD CHAMPIONSHIP DECKS
Professor Oak's New Theory (Christopher Kan)$0.65WORLD CHAMPIONSHIP DECKS
Professor Oak's New Theory (Gustavo Wada)$0.49WORLD CHAMPIONSHIP DECKS
Professor Oak's New Theory (Zachary Bokhari)$0.49WORLD CHAMPIONSHIP DECKS
Professor Oak's New Theory (Igor Costa)$0.42WORLD CHAMPIONSHIP DECKSWhat a Professor Oak's New Theory card is worth
The most valuable Professor Oak's New Theory on this list is Professor Oak's New Theory (League Promo) from League & Championship Cards at $49.95, and the 11 priced copies across 4 sets are worth $66 together. Most of that sits in a handful of printings: the older the set and the scarcer the print run, the wider the gap to the rest.
If you are trying to identify which Professor Oak's New Theory you have, the set name is printed on the card and the collector number sits in the bottom corner. Open the card here and the page carries every printing of it, the graded prices, and whether grading the copy is worth the fee. Sets to start with: League & Championship Cards, HeartGold SoulSilver, Call of Legends.