Pokémon TCG
Professor Oak's New Theory
HeartGold & SoulSilver · 101 · Uncommon
Current UK price · near mint
£0.17▼ 22.7%
As of 2026-05-24 · folio price index · last 7 days
About this card
Professor Oak's New Theory is a Uncommon from HeartGold & SoulSilver, part of the Pokémon TCG trading card game. Track its price, watch its history, and manage your full TCG collection — across 13 games and counting — with folio. Built by collectors, for collectors.