Music Bowl音楽ボウル

A precious bowl holding a golden cylinder that once seemed to have played a melancholic melody. But it stopped working.
In-game description

What is Music Bowl? Features and uses

Music Bowl is a poor item in Core Keeper (Valuables). It can be obtained from Archeologist Wall Loot.

Music Bowl key points (from the game data)

Best source: Archeologist Wall Loot — 10.5% chance per roll.
Sells to merchants for 57 Ancient Coins.

Calculated and summarized by this site from the game data (1.3.0.6).

How to get Music Bowl (Mining walls)

Mining walls (1)

There are also sources whose in-game name has not been confirmed yet (Mining walls: 1).

"Chance" is the chance to get at least one of this item per try (opening one chest, defeating one enemy, one catch). A "guaranteed group" is the group of a chest or boss from which exactly one item always drops; it does not mean this item always drops (the chance of it being picked from that group is shown in small text). Only items that always drop are marked "Guaranteed". Fishing means catches with a fishing rod, separate from enemy and boss drops. Calculated from the game's drop tables (Conf/Loot, 1.3.0.6) the same way the game rolls them.

The game data has no recipe or source for this item.