Illustrated by Daisuke Ito
Mysterious Treasures · Diamond & Pearl series
Unown I
Unown I is a Rare from the Pokémon TCG set Mysterious Treasures (Diamond & Pearl series), card #37 of 124. It's one of 24 Rare cards in the set.
It's a Basic Psychic Pokémon with 50 HP, weak to Psychic +10, and retreats for 1 energy. Its attack is Hidden Power. The art is by Daisuke Ito.
Market value
Updated July 25, 2026Recent range $2.95 – $79.98
- Reverse Holofoil
- $8.80
- Normal
- $1.94
PSA 9 & PSA 10 comps
Graded sales are pulled live in the Scryda app
Scan your copy with Scryda to match the exact print and finish, track it in your collection, and get an alert when the price moves.
Coming Soon
Raw market value for ungraded copies, from marketplace sales data via TCGCSV and refreshed daily. Estimates for reference — not an offer to buy or sell.
How much is Unown I worth?
Unown I (Mysterious Treasures #37) is worth about $8.80 raw and ungraded. Recent marketplace activity spans $2.95 to $79.98 depending on condition and finish. Price data last refreshed July 25, 2026.
More Rare cards in Mysterious Treasures
Most valuable cards in Mysterious Treasures
Attacks
Hidden Power
Choose an Energy card attached to the Defending Pokémon and put it face down. Treat that card as a Special Energy card that provides Colorless Energy and doesn't have any effect other than providing Energy. Put that card face up at the end of your opponent's next turn.
Card details
In this set
- Set
- Mysterious Treasures
- Series
- Diamond & Pearl series
- Card number
- #37 / 124
- Rarity
- Rare
- Released
- August 1, 2007
Common questions
What rarity is Unown I #37?
Unown I is a Rare. Mysterious Treasures contains 24 cards at that rarity out of 124 total.
Does condition change what Unown I is worth?
The prices on this page are for raw, ungraded copies. Condition swings what a card fetches — a Near Mint copy can be worth several times a played one, and a PSA 9 or PSA 10 slab is a different market again. Scryda scans the card, reads the exact print and finish, and shows raw alongside graded comps.