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.

The painting is an allusion to Van Gogh's "Starry Night over the Rhone", in the game called " Starry Night Over the Pontar" by Van Rogh. And the glasses allude to the glasses worn by the main character (an assassin) in the movie "The Professional". In the game, they say they belonged to an assassin called the Professor. I think they were just thrown into the game for fun.