Professor Oak's New Theory
HeartGold & SoulSilver·#101·Uncommon
Art by Ken Sugimori
Professor Oak's New Theory — HeartGold & SoulSilver #101
Uncommon
The 2010 HeartGold & SoulSilver Professor Oak's New Theory (#101) is a Uncommon card illustrated by Ken Sugimori. Current market price is $6.92 (updated 2026-04-11).
Hover a line to inspect the latest value and date for the visible tiers.
Latest Sales
21Raw
PSA
- Apr 8$7.00Near MintNear MinteBay/PTProfessor Oak's New Theory 101/123 Heartgold & Soulsilver Reverse Holo NM
- Mar 30$2.62Lightly PlayedLightly PlayedeBay/PTProfessor Oak's New Theory 101/123 (Christopher Kan) World Champs Pkmn Card LP
- Mar 9$4.72Near MintNear MinteBay/PTProfessor Oak’s New Theory - 101/123 - Reverse Holo - HeartHold SoulSilver - NM
- Mar 9$3.39PSA 7PSA 7eBay/PT2010 POKEMON HEARTGOLD & SOULSILVER #101 PROFESSOR OAK'S NEW THEORY PSA 7 #101
- Mar 5$3.45Lightly PlayedLightly PlayedeBay/PTProfessor Oak's New Theory 101/123 - Reverse Holo - 2010 Pokemon - LP
- Mar 1$4.00Near MintNear MinteBay/PTProfessor Oak's New Theory 101/123 Heartgold & Soulsilver Reverse Holo NM
- Feb 1$4.99Lightly PlayedLightly PlayedeBay/PTX2 Professor Oak's New Theory 101/123 Heartgold Soulsilver Reverse Holo LP / MP
- Jan 25$3.08Near MintNear MinteBay/PTProfessor Oak's New Theory 101/123 HGSS Pokemon Card NM
- Dec 28$1.10Lightly PlayedLightly PlayedeBay/PTProfessor Oak's New Theory 101/123 Heartgold & Soulsilver Reverse Holo LP
- Nov 18$1.99Near MintNear MinteBay/PTProfessor Oak's New Theory #101/123 Uncommon, HeartGold SoulSilver, NM
- Nov 18$1.99Near MintNear MinteBay/PTProfessor Oak's New Theory Uncommon #101/123 HeartGold SoulSilver NM Pokemon 101/123
- Nov 8$2.30Near MintNear MinteBay/PTPokémon Professor Oak's New Theory 101/123 HS HeartGold & SoulSilver NM
- Aug 29$2.01Lightly PlayedLightly PlayedeBay/PTProfessor Oak's New Theory 101/123, Heartgold & Soulsilver, Pokemon, LP
- Aug 19$2.16Lightly PlayedLightly PlayedeBay/PTProfessor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon LP 101/123
- Jul 13$2.49Near MintNear MinteBay/PT⚠Bill 89/123 & Professor Oak's New Theory 101/123 HeartGold SoulSilver Pokémon NM 101/123
- Jul 10$2.10Near MintNear MinteBay/PTPokémon Professor Oak's New Theory 101/123 HS HeartGold & SoulSilver NM
- Apr 14$1.89Lightly PlayedLightly PlayedeBay/PTProfessor Oak's New Theory 101/123 HeartGold & SoulSilver HGSS Pokemon Card LP
- Mar 5$1.36Lightly PlayedLightly PlayedeBay/PTProfessor Oak's New Theory 101/123 HeartGold SoulSilver Pokemon Card - Lp/Vlp
- Feb 1$1.55Lightly PlayedLightly PlayedeBay/PTProfessor Oak's New Theory - 101/123 - Pokemon HeartGold SoulSilver LP
- Jan 24$1.60Near MintNear MinteBay/PTPROFESSOR OAK'S NEW THEORY - 101/123 - HeartGold SoulSilver HGSS - Pokemon - NM 109/132
- Dec 31$0.99Lightly PlayedLightly PlayedeBay/PTProfessor Oak's New Theory 101/123 Pokemon HeartGold SoulSilver Regular LP
Showing 21 of 21 · Updated yesterday
Market Prices
NM $6.92Updated Apr 14, 2026
Market Prices
NM $6.92Raw Card
Tier
Market
Sales
7d
Near Mint
$6.92
183
—
Lightly Played
$3.40
200
—
Moderately Played
$2.49
11
↑ 9.4%
Heavily Played
$1.82
4
—
Damaged
$1.88
5
—
