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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Mr. Stone's Project (Holon Phantoms #88) at $1.00 market price (TCGplayer market). Its Delta multiple is 47.1x.
A PSA 10 Mr. Stone's Project (Holon Phantoms #88) is currently shown at $49.00. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 71.4% gem rate for Mr. Stone's Project (Holon Phantoms #88), with 5 PSA 10 copies out of 7 total PSA grades and a 47.1x Delta. That describes the grading profile; it is not financial advice.