Professor Oak's New Theory Pokémon Card Value English
Professor Oak's New Theory cards currently sell for $3.34 for Call of Legends to $6.92 for HeartGold & SoulSilver ungraded. PSA 10 copies sell for up to $999.95 for HeartGold & SoulSilver. First printed in HeartGold & SoulSilver, most recently in Call of Legends. A PSA 10 HeartGold & SoulSilver copy trades at roughly 145× its raw price. All 2 cards are listed below.
Prices last updated August 20, 2026
Professor Oak's New Theory – HeartGold & SoulSilver (101/123 · Uncommon)
| Variant | Market | Low | High | 30-day avg | PSA 10 |
|---|---|---|---|---|---|
| Normal | $0.89 | $0.89 | $0.89 | $0.92 | $999.95 |
| Reverse Holofoil | $6.92 | $6.92 | $6.92 | $6.92 | — |
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Illustrated by Ken Sugimori
Professor Oak's New Theory – Call of Legends (83/95 · Uncommon)
Set: Call of Legends
| Variant | Market | Low | High | 30-day avg | PSA 10 |
|---|---|---|---|---|---|
| Normal | $1.04 | $1.04 | $1.04 | $1.05 | $49.97 |
| Reverse Holofoil | $3.34 | $3.34 | $3.34 | $3.30 | $72.00 |
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Illustrated by Ken Sugimori