Cards › HeartGold & SoulSilver › #101
Professor Oak's New Theory - HeartGold & SoulSilver (#101)
- Number
- 101
- Illustrator
- Ken Sugimori
Professor Oak's New Theory - HeartGold & SoulSilver
Professor Oak's New Theory is a Uncommon Trainer card from the HeartGold & SoulSilver Pokémon TCG set, released 2010, illustrated by Ken Sugimori. It sits at card number 101 in the HeartGold & SoulSilver checklist and the Supporter subtype.
In collector terms, this is an uncommon card. The stored TCGplayer market reference for reverseHolofoil is $6.99. This is the highest available reference across the 2 listed variants. Available values are listed below; inconsistent ranges are hidden.
Professor Oak's New Theory has been printed 2 times across different sets. The variant you're looking at (#101 in HeartGold & SoulSilver) is one of them - see every other printing further down to compare art, rarity, and current market price across all versions.
CIV 73Strong
Strong market heat. Weak icon status.
30 / 90 / 365-day price momentum.
Cultural recognition + iconic-set bonus.
Release-window weight.
Price references USD
Card record updated 2026-10-30. The source's price refresh time is not available. A history snapshot records stored values and does not confirm a new source update.
Where to buy on eBay 24 active listings · updated 1992m ago
Market price history
Sale History 64 sales · since 2021-01-01
| Date | Grade | Price | Lot |
|---|---|---|---|
| RAW | $1.19 | ||
| RAW | $1.54 | ||
| RAW | $0.96 | ||
| RAW | $0.99 | ||
| RAW | $0.88 | ||
| RAW | $1.88 | ||
| RAW | $1.88 | ||
| RAW | $1.88 | ||
| RAW | $1.85 | ||
| RAW | $1.93 | ||
| RAW | $1.85 | ||
| RAW | $1.55 | ||
| RAW | $1.55 | ||
| RAW | $1.46 | ||
| RAW | $1.55 | ||
| RAW | $1.49 | ||
| RAW | $1.10 | ||
| RAW | $1.09 | ||
| RAW | $1.09 | ||
| RAW | $1.09 | ||
| RAW | $1.09 | ||
| RAW | $1.36 | ||
| RAW | $1.35 | ||
| RAW | $1.35 | ||
| RAW | $1.35 | ||
| RAW | $1.35 | ||
| RAW | $1.35 | ||
| RAW | $1.37 | ||
| RAW | $1.47 | ||
| RAW | $1.47 | ||
| RAW | $1.47 | ||
| RAW | $1.47 | ||
| RAW | $1.49 | ||
| RAW | $1.47 | ||
| RAW | $1.47 | ||
| RAW | $1.47 | ||
| RAW | $1.48 | ||
| RAW | $1.47 | ||
| RAW | $1.48 | ||
| RAW | $1.48 | ||
| RAW | $1.49 | ||
| RAW | $1.49 | ||
| RAW | $1.44 | ||
| RAW | $1.46 | ||
| RAW | $1.52 | ||
| RAW | $1.55 | ||
| RAW | $1.55 | ||
| RAW | $1.61 | ||
| RAW | $1.66 | ||
| RAW | $1.77 | ||
| RAW | $0.95 | ||
| RAW | $0.95 | ||
| RAW | $0.94 | ||
| RAW | $0.94 | ||
| RAW | $0.94 | ||
| RAW | $0.94 | ||
| RAW | $0.94 | ||
| RAW | $0.96 | ||
| RAW | $0.99 | ||
| RAW | $0.99 | ||
| RAW | $0.99 | ||
| RAW | $0.99 | ||
| RAW | $4.49 | ||
| RAW | $7.99 |
Other printings of Professor Oak's New Theory
Professor Oak's New Theory FAQ
Pricing and details from this card's stored record.
How much is Professor Oak's New Theory from HeartGold & SoulSilver worth?
The stored TCGplayer market reference for reverseHolofoil is $6.99. The headline selects the highest available reference across the listed variants. Card record updated 2026-10-30. The source's price refresh time is not available. Reference prices are not guaranteed sale prices. The variant table shows the available values; inconsistent ranges are hidden. Historical chart values may use different sources or variants.
How rare is Professor Oak's New Theory?
This printing is an uncommon card (the card is labeled "Uncommon" on the checklist). Professor Oak's New Theory has been printed 2 times across different sets - earlier or limited printings often command premiums even when the rarity tier is identical.
Who illustrated Professor Oak's New Theory?
Ken Sugimori illustrated this card. See Ken Sugimori's full Catchinary page for every Pokémon card they've drawn, grouped by set with current market prices, career stats, and alt-art highlights.
When was Professor Oak's New Theory released?
The HeartGold & SoulSilver set released in 2010, so this card (#101 in the set) has been available since then. Its current and historical market price is tracked above.
Where can I buy Professor Oak's New Theory?
The "Where to buy on eBay" panel above shows live listings. For long-term holds, consider graded copies (PSA / CGC) which trade separately and usually at a premium over raw.
Is Professor Oak's New Theory legal in Standard format?
Check the current Pokémon TCG format rules and this exact printing's eligibility before tournament play. A card's age or set alone does not confirm its legality.