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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Professor Oak's New Theory (Call of Legends #83) at $0.98 market price (TCGplayer market). Its Delta multiple is 45.4x.
A PSA 10 Professor Oak's New Theory (Call of Legends #83) is currently shown at $49.97. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 50.0% gem rate for Professor Oak's New Theory (Call of Legends #83), with 1 PSA 10 copy out of 2 total PSA grades and a 45.4x Delta. That describes the grading profile; it is not financial advice.