Golden Ancient Chest金色の古代の宝箱

A golden version of the ancient chest which seems to be even older.
In-game description

What you get from salvaging Golden Ancient Chest (Salvage and Repair Station)

Golden Ancient Chest can be salvaged. Salvaging it gives the following items.

For each material, the amount is "amount used to craft × 0.49 (lower when durability is down, 0.3 at 0 durability) × the item's multiplier", and a fraction is the chance of one more (2.4 means 2, with a 40% chance of 3). The range is from 0 durability to full durability (items without durability always count as full). Scrap parts are a fixed number set by the item level. All items that can be salvaged are listed in salvaging.

How to get Golden Ancient Chest

Placed inside dungeons or scenes (buildings, ruins and so on); break it or pick it up to get itPlaced in: Maze Segment, Desert Melody Room, Treasure Temple [The Desert of Beginnings], Temple Trap Room, Seed Vault (style 1) [The Desert of Beginnings], Seed Vault (style 2) [The Desert of Beginnings], Desert Temple, Desert Bridge Area [The Desert of Beginnings], Cultist Temple [The Passage], Legendary Scepter Temple [The Desert of Beginnings] and 3 more

Scene containers, dungeon placements, guaranteed drops and natural spawns are based on the Obtaining data of the Core Keeper Wiki (Fandom) (CC BY-SA 3.0), because these are not in the game files this site reads. Scene names are the wiki's English names.