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Professor Oak's New Theory #101

HeartGold & SoulSilver
Release Date February 10, 2010Card Number #101
Ungraded
€0.89
 
Grade 9
€14.38
 
PSA 10
€40.71
 

Professor Oak's New Theory #101 price guide

Current sold value for every grade.
Ungraded€0.89
Grade 2€1.78
Grade 3€1.78
Grade 4€1.78
Grade 5€1.78
Grade 6€2.67
Grade 7€3.02
Grade 9€14.38
Grade 9.5€16.03
SGC 10€24.04
CGC 10€24.04
PSA 10€40.71
BGS 10€52.53
BGS 10 Black€262.64
CGC 10 Pristine€43.62

Recent sales

Individual completed sales, newest first (Ungraded).
12 Oct 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€1.01
24 Sept 2026Professor Oak's New Theory HeartGold SoulSilver 101/123 LP Pokemon 101/123eBay€1.95
12 Sept 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€0.74
8 Sept 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€0.42
2 Sept 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€0.71
28 Aug 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€0.53
26 Aug 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€0.42
24 Aug 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€0.62
14 Aug 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€0.71
13 Aug 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€0.45
12 Aug 2026Professor Oak's New Theory 101/123 Pokemon Uncommon HeartGold SoulSilver Card LPeBay€0.79
1 Aug 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€0.89
31 Jul 2026Pokemon Professor Oak's New Theory HeartGold & SoulSilver 101/123 NM 101/123eBay€1.78
28 Jul 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€0.80
27 Jul 2026PROFESSOR OAK'S NEW THEORY - 101/123 - HeartGold SoulSilver HGSS - Pokemon - NM 109/132eBay€1.42
20 Jul 2026PROFESSOR OAK'S NEW THEORY 101/123 HEARTGOLD & SOULSILVER Uncommon Pokemon 101/123eBay€2.48
18 Jul 2026Professor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon NM 101/123eBay€1.77
16 Jul 2026Pokemon Card Heartgold Soulsilver No. 101/123 Professor Oak's New Theory EnglisheBay€1.02
11 Jul 2026Professor Oak's New Theory HeartGold SoulSilver 101/123 Pokemon Card 101/123eBay€1.77
10 Jul 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€1.75
6 Jul 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€0.58
2 Jul 2026Pokemon - Professor Oak's New Theory - 101/123 - Uncommon - HeartGold SoulSilver 101/123eBay€0.92
22 Jun 2026Professor Oak's New Theory #101 Near Mint EnglishTCGPlayer€0.71
20 Jun 2026Professor Oak's New Theory HeartGold SoulSilver Uncommon 101/123 2010 Pokemon TC 101/123eBay€2.66
20 Jun 2026PROFESSOR OAK'S NEW THEORY - 101/123 - HeartGold SoulSilver HGSS - Pokemon - PL 109/132eBay€1.34

How much is Professor Oak's New Theory #101 (HeartGold & SoulSilver) worth?

Right now an ungraded copy of Professor Oak's New Theory #101 from HeartGold & SoulSilver sells for about €0.89, a PSA 9 for about €14.38 and a PSA 10 for about €40.71. These values are based on 27 recent completed sales, the latest on 12 Oct 2026. Prices are converted from US dollars to euros and updated every few hours.

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