Pokémon sets › Steam Siege › Shellos [Reverse Holo]
![Steam Siege Shellos [Reverse Holo] Pokémon card](https://pub-4919690d36064f94806d666a71d998a0.r2.dev/Steam%20Siege/shellos-reverse-holo-28.jpg)
Shellos [Reverse Holo] #28
Ungraded
£0.98
PSA 10
£20.79
Guide prices in GBP for the UK market, updated 21 June 2026. Estimates for collection tracking — not an appraisal or a quote.
![Mantine [Reverse Holo]](https://pub-4919690d36064f94806d666a71d998a0.r2.dev/Steam%20Siege/mantine-reverse-holo-27.jpg)
![Gastrodon [Reverse Holo]](https://pub-4919690d36064f94806d666a71d998a0.r2.dev/Steam%20Siege/gastrodon-reverse-holo-29.jpg)
![Oshawott [Reverse Holo]](https://pub-4919690d36064f94806d666a71d998a0.r2.dev/Steam%20Siege/oshawott-reverse-holo-30.jpg)
![Dewott [Reverse Holo]](https://pub-4919690d36064f94806d666a71d998a0.r2.dev/Steam%20Siege/dewott-reverse-holo-31.jpg)
![Volcanion [Reverse Holo]](https://pub-4919690d36064f94806d666a71d998a0.r2.dev/Steam%20Siege/volcanion-reverse-holo-25.jpg)