How much is Unown [I] 37/123 worth?

Unown [I] 37/123 from Mysterious Treasures has a current market price of $2.41 for the Normal variant. Recent sales range from $1.00 to $19.98.

Is Unown [I] a good investment?

Unown [I] has appreciated 225.7% since release, showing a positive long-term trend for collectors and investors.

Where can I buy Unown [I]?

Unown [I] is available on TCGplayer through verified sellers. Use the Buy button on this page to view current listings, market prices, and condition options.

What set is Unown [I] from?

Unown [I] is from the Mysterious Treasures set, part of the Diamond & Pearl series, which contains 124 cards. It is card number 37/123 with a rarity of Rare and Psychic type.

Unown [I] 37/123 Price 2026 | Mysterious Treasures

Market Price

$2.41

Normal

Price updated Sep 27, 2026

+225.7%all time

Unown [I] has gained 225.7% since release. Normal prices range from $1.00 to $19.98.

Variant	Market	Low	Mid	High	Trend
NormalDEFAULT	$2.41	$1.00	$2.78	$19.98	▲ 225.7%
Reverse Holofoil	$9.05	$4.95	$12.89	$96.54	▲ 1607.5%

Price History

Market price by variant

Card Details

Type: Psychic
Stage: Basic
HP: 50
Weakness: P+10
Retreat Cost: 1
Set: Mysterious Treasures
Rarity: Rare
Card #: 37/123

Attacks

[1] 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 1 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.

Unown [I] – 37/123

Price History

Card Details

Attacks

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