Stored in a dark place. When you turn the screw on the back, the music box plays and the head moves slowly. The song is "Itoshi no Ellie" by Southern All Stars. The screw is tarnished because it's old. There is some aging, but there are no noticeable stains, and I think the condition is good for an old item. Operation has been confirmed. Please understand that this is a used item before purchasing.