Wow, it's loaded with treasure! This is sure to fetch a good price. The treasure chest is a valuable item ... or obtained as a prize from the Prize Machine in the Mayor's Manor.
Collins-Black hid them inside five treasure chests - four smaller ones and one large one - that double as puzzle boxes. But in order to ensure those who find the chests can get the prize inside ...
The doorway is marked with a chest icon. Inside, pay 20 Rupees to open one of three randomized treasure chests. The biggest prize is a Green Rupee, worth 50 Rupees.