101Leafy researched the games.
Expert Hammer

Inscribed with "Good Job", this Hammer is given to the top students in training.
| Class | Hammer |
|---|---|
| Rarity | 8 |
| Attack | 1092 |
| Defense | +12 |
| Slots | 3 |
| Price | 20,000z |
Upgrades
| Upgraded from | Black Belt Hammer |
|---|---|
| Upgrades into | Warrior's 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 726.