|A masterpiece carved entirely from a single piece of jade, this helmet is said to have once belonged to a great samurai hippo.|
— In-game description[src]
The Jade Samurai Helmet is a green helmet that is designed after the common samurai helmet, or kabuto. According to the description, it possibly belonged to a great samurai hippo, who was also referenced by the Tales of a Samurai Hippo Comic.
It is located in the southwest area of the map, to the east of the geisha house on a crate. Using the Thief Costume's ability can make the run back easier.
|Sly Cooper: Thieves in Time treasure|