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Unown I 037/123 — Mysterious Treasures

Card image ©Pokémon/Nintendo/Creatures/GAME FREAK · shown for reference. Legal

Mysterious Treasures· Diamond & Pearl

Unown I

037/123Rare50 HP PsychicBasic
Market price · Normal
$2.65
TCGplayer (US) · updated Nov 2, 2026
≈ $3.96 delivered +$1.31 shipping (TCGplayer minimum on orders under $5)

Estimate for one card from a US seller. Buying several cards from the same seller shares one shipping fee. Shipping to Canada varies by seller.

TCGplayer · US market
Market
$2.65
Low
—
Mid
—

Printings (2)

  • Set
    $2.65Shop
    0
  • Master Set
    $10.38Shop
    0
Collection tracking (owned printings, condition, what you paid) opens October 25 — bookmark this page and check back.
Poke-POWER
ITEM

Once during your turn (before your attack), if you have Unown I, Unown T, Unown E, and Unown M on your Bench, you may search your deck for a Trainer card, show it to your opponent, and put it into your hand. Shuffle your deck afterward. You can't use more than 1 ITEM Poké-Power each turn.

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.

Weakness
+10
Retreat
1
Illustrator
Daisuke Ito
Pokédex
#0201
Format
Not Standard
Released
August 1, 2007

“Shaped like ancient writing, it is a huge mystery whether language or UNOWN came first.”

Price history

  • Normal$2.65
  • Reverse Holo$10.38
$0.00$2.50$5.00$7.50$10.00Oct 3Oct 18Nov 2
Show as table
DateNormalReverse Holo
Nov 2, 2026$2.65$10.38
Nov 1, 2026$2.65$10.38
Oct 31, 2026$2.65$10.38
Oct 30, 2026$2.60$10.38
Oct 29, 2026$2.60$10.38
Oct 28, 2026$2.60$10.38
Oct 27, 2026$2.60$10.38
Oct 26, 2026$2.60$10.38
Oct 25, 2026$2.60$10.38
Oct 24, 2026$2.60$10.38
Oct 23, 2026$2.60$10.38
Oct 22, 2026$2.60$10.38
Oct 21, 2026$2.60$10.38
Oct 20, 2026$2.60$10.38
Oct 19, 2026$2.60$10.38
Oct 18, 2026$2.60$10.38
Oct 17, 2026$2.60$10.38
Oct 16, 2026$2.60$10.38
Oct 15, 2026$2.60$10.38
Oct 14, 2026$2.60$10.38
Oct 13, 2026$2.58$10.38
Oct 12, 2026$2.58$10.38
Oct 11, 2026$2.58$10.38
Oct 10, 2026$2.58$10.38
Oct 9, 2026$2.58$10.38
Oct 8, 2026$2.58$10.38
Oct 7, 2026$2.58$12.02
Oct 6, 2026$2.58$9.05
Oct 5, 2026$2.53$9.05
Oct 4, 2026$2.53$9.05
Oct 3, 2026$2.53$9.05

Showing the last 30 days. Full price history is on Elite and Master

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Other Unown I cards

Market trend

As of Nov 2, 2026 · TCGplayer (US)

7 days
+1.9%
30 days
+4.7%
vs set · 7D
+4.1%-2.1 pts vs set
Volatility (30D) Elite+
—
PrintingPrice1D7D30D
Normal$2.650.0%+1.9%+4.7%
Reverse Holo$10.380.0%0.0%+14.7%
Elite+
Volatility (30D)
See plans

Price history by source · Normal

  • TCGplayer
$2.50$2.55$2.60$2.65Oct 3Oct 18Nov 2
Show as table
DateValueSource
Nov 2, 2026$2.65TCGplayer
Nov 1, 2026$2.65TCGplayer
Oct 31, 2026$2.65TCGplayer
Oct 30, 2026$2.60TCGplayer
Oct 29, 2026$2.60TCGplayer
Oct 28, 2026$2.60TCGplayer
Oct 27, 2026$2.60TCGplayer
Oct 26, 2026$2.60TCGplayer
Oct 25, 2026$2.60TCGplayer
Oct 24, 2026$2.60TCGplayer
Oct 23, 2026$2.60TCGplayer
Oct 22, 2026$2.60TCGplayer
Oct 21, 2026$2.60TCGplayer
Oct 20, 2026$2.60TCGplayer
Oct 19, 2026$2.60TCGplayer
Oct 18, 2026$2.60TCGplayer
Oct 17, 2026$2.60TCGplayer
Oct 16, 2026$2.60TCGplayer
Oct 15, 2026$2.60TCGplayer
Oct 14, 2026$2.60TCGplayer
Oct 13, 2026$2.58TCGplayer
Oct 12, 2026$2.58TCGplayer
Oct 11, 2026$2.58TCGplayer
Oct 10, 2026$2.58TCGplayer
Oct 9, 2026$2.58TCGplayer
Oct 8, 2026$2.58TCGplayer
Oct 7, 2026$2.58TCGplayer
Oct 6, 2026$2.58TCGplayer
Oct 5, 2026$2.53TCGplayer
Oct 4, 2026$2.53TCGplayer
Oct 3, 2026$2.53TCGplayer
Quick facts

Questions & answers

How much is Unown I worth?
Unown I (037/123, Mysterious Treasures) is worth about $2.65: the TCGplayer market price of its Normal printing, updated November 2, 2026.
What printings of Unown I 037/123 exist?
Unown I 037/123 exists in 2 printings: Normal and Reverse Holo.
What set is Unown I from?
Unown I is card 037/123 of Mysterious Treasures (Diamond & Pearl), released on August 1, 2007.
What rarity is Unown I 037/123?
Unown I (037/123, Mysterious Treasures) is a Rare card.
Who illustrated Unown I 037/123?
The artwork of Unown I (037/123, Mysterious Treasures) is by Daisuke Ito.

Answers are generated from Tallgrass's own catalog and market data.