Unown [I]

Mysterious Treasures · #37/123 · Rare · 2007

$8.80

Reverse Holofoil · Market price ▼ 3.0% (30d)

Prices as of Jul 26, 2026

Normal Reverse Holofoil

HP 50PsychicBasicArt · Daisuke Ito

25graded pop

4%gem rate

7.8×PSA 10 vs raw

-48%off ATH $3.68 · Jul 2026

−$6.08EV to grade — don't

Printings & price history

Reverse Holofoil▲ 0.6% 7d$8.80

Low $2.95

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Graded values

updated 2026-07-26

Grade 6 est.$3.89

Grade 5 est.$3.27

Grade 4 est.$2.70

Grade 3 est.$2.25

Grade 2 est.$1.84

Grade 1 est.$1.55

Grades 1–6 are estimates modeled from the raw price — PSA/CGC/BGS 7–10 and Ungraded are live tracked market values.

Reverse Holofoil · PSA 10 price history$113.91

PSA 10 chart is building — graded values are tracked nightly, a new point appears each day.

Graded population census · updated 2026-07-08

CGC18 graded · 1 gem 10

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PSA7 graded · 0 gem 10

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Population data from PriceCharting, updated monthly.

Abilities

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.

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.

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

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

A raw copy of Unown [I] #37/123 (Mysterious Treasures, 2007) is worth about $1.94 right now, based on the latest market data from July 27, 2026. Across the 2 printings we track, copies run anywhere from $0.95 to $79.98 depending on the version you're holding.

Grading changes the math on this one: a PSA 10 is valued around $68.97, roughly 35.6x the raw price, while a PSA 9 sits near $26.00. 18 copies have been graded to date, and 6% of them came back a 10 — worth knowing before you pay grading fees.

These figures come from nightly market-data syncs verified against completed sales. Use the chart above to see the trend before you buy or sell.

Other printings of Unown [I] 1

Unown [I]

Neo Discovery · #68/75