Question 1

What is the current market value of Mr. Stone's Project #88?

Accepted Answer

For Mr. Stone's Project in Holon Phantoms, the current reference price is $0.40. Week-over-week movement is lower by 21.6%. It is currently 39.4% below the 30-day average of $0.66. The 90-day window shows a floor near $0.40 and a peak around $1.05 (163% total spread), which maps to high-volatility movement. Rarity classification for this copy is Uncommon.

Question 2

Is Mr. Stone's Project #88 a good investment or collectible?

Accepted Answer

Current valuation lens: Recent pricing has softened by 21.6% over 7 days, with the card now 62% below its 90-day high. With a 163% 90-day spread ($0.40-$1.05), this card currently tracks as high-volatility. Current value is 39.4% below its 30-day reference ($0.66). This sample does not include a stable graded benchmark, which means active listings remain the best condition-adjusted reference.

Question 3

What is Mr. Stone's Project #88 and what makes it special?

Accepted Answer

Mr. Stone's Project is a Holon Phantoms card from the 2006 release window. Its card type is Trainer. The rarity label is Uncommon. It carries a Supporter subtype designation. The card text reads: You can play only one Supporter card each turn. When you play this card, put it next to your Active Pokémon. When your turn ends, discard this card. Search your deck for up to 2 basic Energy cards, show them to your opponent, and put them into your hand. Shuffle your deck afterward. Or, search your discard pile for up to 2 basic Energy cards, show them to your opponent, and put them into your hand. Attack names are not present in the current metadata snapshot. Uncommon-tier prints usually balance accessibility with moderate collector demand.

Question 4

What are the alternative Mr. cards available?

Accepted Answer

Mr. Stone's Project sits within a broader pool of Mr. variants that can be compared by set, rarity, and price. The current sample spans 2 comparable cards from 2 sets. Comparable prices currently cover $0.51-$1.37, a 169% band. Against the sample mean of $0.94, this card is -57%. Notable alternatives include Mr. Stone's Project #77 (Dragon Frontiers) at $0.51 and Mr. Stone's Project #79 (Emerald) at $1.37.

Question 5

What set is Mr. Stone's Project #88 from, and when was it released?

Accepted Answer

Release year for Holon Phantoms is 2006. It belongs to the EX series. The checklist contains 111 cards, placing it in a mid-size expansion range. As of 2026, the set is 20 years old and fits a legacy-era profile. Within this set, Mr. Stone's Project is card number 88 with a Uncommon designation.

Mr. Stone's Project #88

Price history

All Mr. Stone's Project cards

Card details