101Leafy researched the games.
Silver Serpentblade

Beautiful Great Sword made from white Giaprey scales. Lined with gold fangs.
| Class | Great Sword |
|---|---|
| Rarity | 2 |
| Attack | 480 |
| Ice | 240 |
| Slots | 0 |
| Price | 2,150z |
Upgrades
| Upgraded from | White Serpentblade |
|---|---|
| Upgrades into | Golden Serpentblade, Vile Serpentblade |
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 686.