| 2026-07-22 | $177.50 | 10 | PSA | 1999 POKEMON FOSSIL 1ST EDITION #56 TENTACOOL PSA 10 #56 | — |
| 2026-07-20 | $2.25 | — | Raw | Pokémon TCG Tentacool 56/62 Fossil Common 1st Edition Regular NM 1999 English 56/62 | — |
| 2026-07-18 | $1.99 | — | Raw | Tentacool 56/62 1st Edition Common Fossil Pokemon LP- 56/62 | — |
| 2026-07-18 | $3.99 | — | Raw | Tentacool 56/62 Common Fossil Pokemon 1st Edition Lightly Played 56/62 | — |
| 2026-07-18 | $1.07 | — | Raw | Tentacool #56 Near Mint English 1st Edition | — |
| 2026-07-18 | $14.99 | 8.5 | CGC | 1999 Pokemon TCG Fossil 1st Edition Tentacool 56/62 - CGC 8.5 56/62 | — |
| 2026-07-17 | $2.50 | — | Raw | Tentacool #56 Near Mint English 1st Edition | — |
| 2026-07-17 | $2.69 | — | Raw | Tentacool 56/62 1st Edition Fossil Pokémon WOTC Trading Card Light Play LP Spanish 56/62 | — |
| 2026-07-17 | $0.99Outlier | — | Raw | 💥 TENTACOOL 1st Edition Fossil 1999 Rare Non Holo Foil Pokemon Vintage # 56/62 56/62 | — |
| 2026-07-17 | $2.75 | — | Raw | Tentacool 56/62 Fossil First Edition Near Mint Common Pokemon Card | — |
| 2026-07-17 | $26.79 | 9 | PSA | 1999 Pokemon Fossil 1st Edition Tentacool 56/62 PSA 9 Mint 56/62 | — |
| 2026-07-16 | $174.89 | 10 | PSA | PSA 10 1st Edition Tentacool Fossil - (56/62) GEM MINT 1999 Pokemon English | — |
| 2026-07-16 | $2.50 | — | Raw | Pokemon TCG Tentacool 1st Edition 56/62 Fossil Set Rare 56/62 | — |
| 2026-07-15 | $1.98 | — | Raw | Pokemon TCG Fossil Tentacool 56/62 1st Edition Common LP 56/62 | — |
| 2026-07-15 | $0.99Outlier | — | Raw | 💥 TENTACOOL 1st Edition Fossil 1999 Rare Non Holo Foil Pokemon Vintage # 56/62 56/62 | — |
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