Compare: Professor Oak's New Theory

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Same name, different sleeves. Signal compares each row against the reference printing's recent market price.

By printing

signal vs primary
PrintingMarketListed midDealer buy
Foilprimary
$3.27
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Each price is compared against the primary printing's recent market price.

Same name across sets

SetPrimary printingMarketSignal vs reference
Professor Oak's New TheoryHeartgold SoulsilverFoil$6.92+112%
Professor Oak's New TheoryHeartgold SoulsilverNormal$0.90-72%
Professor Oak's New TheoryHeartgold SoulsilverFoil$6.92+112%

Reference: Call Of Legends · Foil $3.27.