101Leafy researched the games.
Anchor Hammer

Enormous anchor-like Hammer packed with a sailor's passion for the sea.
| Class | Hammer |
|---|---|
| Rarity | 3 |
| Attack | 572 |
| Water | 100 |
| Slots | 1 |
| Price | 2,150z |
Upgrades
| Upgraded from | War Mace |
|---|---|
| Upgrades into | Anchor Hammer+ |
Upgrade tree from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 720.