101Leafy researched the games.
Gold Cat Hammer

A Cat Hammer with a rare golden sheen. Coveted even among nobility.
| Class | Hammer |
|---|---|
| Rarity | 8 |
| Attack | 832 |
| Paralysis | 280 |
| Slots | 2 |
| Price | 45,000z |
Upgrades
| Upgraded from | Black Cat Stamp |
|---|---|
| Upgrades into | Gold Cat Crusher |
Can also be made new at the smithy.
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.
Materials
Felyne Fur Ruby ×3, FlynMealPassReg ×15, FlynMealPassPlus ×5, Gld Rathian Scl+ ×5