![Tentacool [1st Edition] #20 Pokémon card from Japanese Undone Seal](https://storage.googleapis.com/images.pricecharting.com/napwwz5trivor2ss/240.jpg)
Japanese
Tentacool [1st Edition] 20/83
Undone Seal· Language: Japanese
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Tentacool [1st Edition] #20 from Japanese Undone Seal currently trades at $1.16 raw, with PSA 10 copies reaching $70.00 — a 60.3x grade premium.
Current Prices (USD)
Ungraded
PSA 7
PSA 8
PSA 9
PSA 10
ACE 10
BGS 10 Black
CGC 10 Pristine
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Quick price facts
Tentacool [1st Edition] 20/83 from Undone Seal has a current raw market value of $1.16.
- Current raw value
- $1.16
- PSA 9 value
- $0.99
- PSA 10 value
- $70.00
- PSA 10 premium vs raw
- 60.3× raw
Collector Intel
60.3x
Raw → PSA 10
High-risk grade
0.9x
Raw → PSA 9
Grade multiplier
Calculated from price history, PSA population data, and market trends. Not financial advice.
Grading Calculator
Based on PSA Standard tier (~$25 USD). Assumes a perfect PSA 10 result — actual outcome depends on card condition.
⚠️ High-variance grade. PSA 10 is 60x the raw price. The expected value accounts for the realistic probability.
$1
Buy Raw
~$25
Grading Fee
PSA Standard
$70
PSA 10 Value
+$44
Best Case (PSA 10)
if you pull a 10
Grade Multiples vs Raw
PSA 9$10.9x raw
PSA 10$7060.3x raw