Tentacruel
Undone Seal - 21/83
Ungraded
Purchase price
$
Quantity
Ungraded
Purchase price
$
Quantity
Market prices
Tentacruel 21/83 from Undone Seal sells for about $2.77 ungraded, based on 2 completed sales over a longer period: it sells too rarely for a 90-day median. As of October 4, 2026.
Graded population: CGC 3 copies (33.3% in 10), as of October 1, 2026.
Ungraded
MedianRangeSales
90 days$2.77est.$2.77 – $2.772 sales
Median by period. Short periods can rest on a handful of sales: the count is shown next to each price, and prices marked “est.” are indicative.
Actual prices may vary.
Graded population report — Tentacruel #21
Updated monthly · as of October 2026
CGC
| Grade | Pop |
|---|---|
| Gem Mint 10 | 1 |
| 9 | 1 |
| Authentic | 1 |
0%17.5%35%
Card details
Types
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Attacks
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Flip a coin. If heads, the Defending Pokémon is now Confused. If tails, discard an Energy card attached to the Defending Pokémon.
Weaknesses
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Information
License
Language
Japanese
Series
Set
Release date
1/16/2004
Rarity
Rare
Card number
21
Total cards
83
Species
Illustrator
