The image of the back side of the necklace shows what looks like gilding and patina on silver.
If so, it can be older than we thought.
Waiting for marks.
I cannot take better pictures like these. I need to buy special camera. The back side is made of solid gold. The front is silver. The necklace is not gilding. Please see fasteners, it really looks like antique, and as you said, before cleaning it had beautiful patina. Yes, antique gold jewellery have patina, cause they have silver addition. The necklace is quite strange ;) I have knowlage of antique jewellery, diamonds and so on, but this one is a mystery, and hallmarks...hoopoe form Austia-Hungary?? I think it doesn't match...what do you think?
Thanks for all help! :)