Unown I
Mysterious Treasures - 37/123
Purchase price
Quantity
Purchase price
Quantity
Market prices
Unown I 37/123 from Mysterious Treasures is worth about $2.49 ungraded and $1.48 in reverse holo, according to Cardmarket's monthly trend for September 2026.
Graded population: CGC 116 copies (3.5% in 10) and PSA 15 copies, as of October 1, 2026.
Graded population report — Unown I #37
Updated monthly · as of September 2026
PSA
| Grade | Pop |
|---|---|
| 9 | 8 |
| 8 | 4 |
| 7 | 1 |
| 6 | 1 |
| 4 | 1 |
CGC
| Grade | Pop |
|---|---|
| Gem Mint 10 | 4 |
| 9.5 | 1 |
| 9 | 46 |
| 8.5 | 44 |
| 8 | 10 |
| 7.5 | 2 |
| 7 | 3 |
| 6.5 | 3 |
| 5 | 1 |
| Authentic | 2 |
About the price of this card
Unown I 37/123 from Mysterious Treasures is worth about $2.49 ungraded and $1.48 in reverse holo, according to Cardmarket's monthly trend for September 2026.
This card sells for very little, so its price is Cardmarket's monthly trend, not a median of completed sales. It can be a few cents off: treat it as an indication, not a precise number.
If you add this card to your portfolio, it won't be counted toward your total portfolio value. It's here so collectors can still track their collection's progress, without inflating the total with low-confidence prices.
Card details
Types
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Attacks
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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.
Weaknesses
