The Witcher 3 Heart of Stone Auction

In that auction, I bought all 3 of them. Simply because I'm damn rich and I wanted to show that to everyone.

• The glasses are simply glasses. You can destroy them for some materials, but as far as I know, there is nothing valuable inside.
• The picture is quite valuable, you can sell it in Novigrad for a good amount of money.
• The statue is worth it, but to be honest, I can't remember what it was inside, I'll check my save file once I'm at home. But I do know that it was definitely worth it, so buy it and let a smith destroy it.

Edit - Contents of the statue:

The statue contains a key and a letter which will unlock a new quest after reading it. You will also discover a new location where you will have to travel. Inside are a few enemies (mainly wolves) and a recipe of a steel sword called Black Unicorn.