Tentacool #20
Japanese Undone Seal
Release Date January 16, 2004Card Number #20Notes Common
Ungraded
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PSA 9
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PSA 10
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Recent sales
Individual completed sales, newest first (Ungraded).
| 7 Oct 2026 | 2004 Light Played Pokemon Tentacool 020/083 Undone Seal ADV Japanese JapaneseeBay | €3.10 |
| 27 Sept 2026 | HP/DMG Pokemon Tentacool 020/083 Undone Seal ADV Japanese Unlimited Japanese 020/083eBay | €1.43 |
| 18 Aug 2026 | HP Tentacool 020/083 - Undone Seal Japanese - Pokemon Card Japanese 020/083eBay | €1.43 |
| 7 Jun 2026 | Tentacool 020/083 ADV Undone Seal Pokemon Japanese Moderately Played Japanese 020/083eBay | €2.37 |
| 9 May 2026 | Pokemon Japanese Tentacool Common Undone Seal 020/083 Near Mint Japanese 020/083eBay | €1.77 |
| 2 May 2026 | Tentacool 020/083 Undone Seal Japanese Pokemon Card TCG Japanese 020/083eBay | €3.20 |
| 1 Jan 2025 | Tentacool 20/83 1st ED Undone Seal Japanese Pokemon Card #20eBay | €2.02 |
Most popular Japanese Undone Seal cards
The set's 10 most popular cards, most popular first. Bar height shows the ungraded value. Pick one to see its prices.
How much is Tentacool #20 (Japanese Undone Seal) worth?
As of , an ungraded copy of Tentacool #20 from Japanese Undone Seal sells for about €2.09 (about $2.34). These values are based on 7 recent completed sales, the latest on 7 Oct 2026. Ungraded values are up 3% over the last 12 months.
Prices are market values from completed sales, shown in euros (converted from US dollars) and updated every few hours.
Tentacool #20 FAQ
How much is Tentacool #20 (Japanese Undone Seal) worth?
Ungraded, Tentacool #20 (Japanese Undone Seal) is worth about €2.09 (about $2.34). Based on recent completed sales as of 23 Oct 2026.
Is Tentacool #20 (Japanese Undone Seal) going up in value?
Ungraded Tentacool #20 values are up 3% over the last 12 months and down 11% over the last month. The highest monthly ungraded value was €2.67 in October 2023.
When was Tentacool #20 (Japanese Undone Seal) released?
Tentacool #20 was released on January 16, 2004 as part of Japanese Undone Seal, card number #20.
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Ninetales ex #18
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Groudon ex #56
Japanese Undone Seal
Ungraded€58.81PSA 10€1,789
Kyogre ex #39
Japanese Undone Seal
Ungraded€39.68PSA 10€880.20
Ninetales #17
Japanese Undone Seal
Ungraded€26.73PSA 10€553.52
Metagross ex #71
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Ungraded€33.53PSA 10€647.56
Milotic #25
Japanese Undone Seal
Ungraded€19.50PSA 10€677.66
Ninetales [1st Edition] #17
Japanese Undone Seal
Ungraded€37.61PSA 10€948.40
Ninetales ex [1st Edition] #18
Japanese Undone Seal
Ungraded€89.17PSA 10€1,337
Kyogre ex [1st Edition] #39
Japanese Undone Seal
Ungraded€66.87PSA 10€1,772
Wigglytuff ex #58
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Ungraded€24.52PSA 10€1,337
Rain Castform [1st Edition] #26
Japanese Undone Seal
Ungraded€5.34PSA 10–
Pinsir #6
Japanese Undone Seal
Ungraded€7.44PSA 10€296.40