A lot of things got jumbled here. Can you straighten things out?
You have found it! This is the Nebra Sky Disc as it is exhibited in the State Museum of Prehistory in Halle (Saale).
The Pleiades are also known as the Seven Sisters. They appear in the starry sky in autumn and accompany us throughout the winter before disappearing from the sky in spring. Here, rather too many stars have joined the actual seven.
The Nebra Sky Disc was black - or so the assumption goes. By careful heating during forging a black patina could be generated. The dark disc provided an excellent background for the golden-coloured stars of the night sky. Only through prolonged burial in the soil did a layer of malachite, caused by corrosion, develop, which gave the Sky Disc its present green colouring.
On the back of the Nebra Sky Disc you can see a groove about five centimetres long. It is likely that the hardness of the bronze was tested here with a tool before changes could be made to the Sky Disc. Can you see it?
This is dragging on a bit. Are you getting hungry?
© Photo pizza: Shutterstock, photo disc: Johannes Kalliauer, first published: 27.11.2019
In the long time it took you to solve this puzzle, Hannelore Lüders from Halberstadt made this Sky Disc in bobbin lace.
The unrestored Sky Disc left many things in the dark. By means of special procedures, the soil adherences could be removed during conservation.
Here you can see the back of the Sky Disc, with adhering soil, before it was cleaned during the conservation.
Before the Nebra Sky Disc was buried, the left horizon arc was removed. Here you can see what the Sky Disc may have looked like before.