101Leafy researched the games.
Anvil Hammer

An anvil from the armory, re-forged into a massive Hammer. Holds its Sharpness.
| Class | Hammer |
|---|---|
| Rarity | 5 |
| Attack | 884 |
| Defense | +4 |
| Slots | 1 |
| Price | 6,350z |
Upgrades
| Upgraded from | Iron Striker+ |
|---|---|
| Upgrades into | Onslaught Hammer, War Stamp, Iron Devil, Bronze Bell, Sakura Recorder |
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 718.