Professor Oak's New Theory
HeartGold & SoulSilver · #101 · Uncommon
Tracking the reverse holofoil printing
$6.92
market (ungraded)
7-day
0.0%
30-day
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History high
$6.92
History low
$6.92
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Price history
10 pointsTCGplayer sold (archive)PokéStocks tracking
Released Feb 10, 2010 · 16 yrs agoTCGplayer sold Jun 18, 2024 – Jun 18, 2024 · 1 pts · reverse nearmintTracked since Jul 21, 2026 · 9 daysTwo different measures: the dashed line is realised TCGplayer soldprices from the tcgdex archive (condition-specific, ends when that archive stopped updating); the solid line is PokéStocks' own daily tracking. The gap between them is real, not missing data.
PSApricing isn't live yet — nothing is estimated or scraped. The raw (ungraded) value is shown now; grades and premium fill in on the first graded import.
Raw
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PSA 10
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PSA 9
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PSA 8
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PSA 7
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Premium
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Premium = top graded price ÷ this card's PriceCharting ungraded price (like-for-like).