101Leafy researched the games.
Gaoren Coin

Mimics the design of ancient currency. The blade can be polished to a high luster.
| Class | Great Sword |
|---|---|
| Rarity | 8 |
| Attack | 1008 |
| Defense | +30 |
| Slots | 0 |
| Price | 85,000z |
Upgrades
| Upgraded from | Bronze Coin |
|---|---|
| Upgrades into | Gaoren Cleaver |
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 684.