Dialga GX (Secret) #138/131
Pokémon · SM - Forbidden Light
- Game
- Pokémon
- Number
- 138/131
- Rarity
- Secret Rare
- Market price
- $78.96
Dialga GX (Secret) PSA 10 price and graded values
| Grade | Price | vs. ungraded |
|---|---|---|
| Ungraded | $67.79 | — |
| PSA 8 | $39.99 | 0.6× |
| PSA 9 | $91.06 | 1.3× |
| PSA 10 | $939.52 | 13.9× |
| BGS 10 | $1,221.00 | 18.0× |
| CGC 10 | $109.65 | 1.6× |
Graded and ungraded sale prices from PriceCharting, updated November 2, 2026. The TCGplayer market price above is a separate listing average and can differ.
Is Dialga GX (Secret) #138/131 worth grading?
Grade only near-perfect copies. Most of the value sits in the PSA 10 at $939.52, 14× the ungraded price of $67.79. A PSA 9 sells for about $91.06, so a copy that comes back a 9 gains much less. Submit only copies with sharp corners, clean edges, and strong centering.
What to check before grading Dialga GX (Secret)
- Back edges: the dark blue Pokémon back shows whitening first, so check all four back edges under bright light.
- Surface: holo, full art, and illustration rares scratch and scuff easily, and textured surfaces hide marks until you tilt the card under angled light.
- Centering: PSA 10 allows roughly 55/45 to 60/40 on the front and 75/25 on the back.
Measure the borders with the card centering calculator, or read the Pokémon card grading guide.
Dialga GX (Secret) grading FAQ
How much is Dialga GX (Secret) #138/131 worth in PSA 10?
Dialga GX (Secret) #138/131 from SM - Forbidden Light sells for about $939.52 in PSA 10 and $91.06 in PSA 9, compared with about $67.79 ungraded.
Is Dialga GX (Secret) #138/131 worth grading?
Grade only near-perfect copies. Most of the value sits in the PSA 10 at $939.52, 14× the ungraded price of $67.79. A PSA 9 sells for about $91.06, so a copy that comes back a 9 gains much less. Submit only copies with sharp corners, clean edges, and strong centering.
How can I check my Dialga GX (Secret) before grading?
Photograph the front and back in even light and run a free AI pre-grade with Card Grading AI. It scores centering, corners, edges, and surface so you can decide whether the card is worth submitting to PSA, BGS, or CGC.
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Prices and product images via TCGplayer / TCG API for reference. CheckTCGplayer for current listings. Game names and card images belong to their respective rights holders. Card Grading AI is not affiliated with, endorsed by, or sponsored by those publishers.