Art fair visitor breaks $42,000 Jeff Koons balloon dog sculpture

Shiny blue sculpture shattered into thousands of pieces, with some collectors believing it was a stunt

A collector visiting a contemporary art fair accidentally knocked over a small glass sculpture by the renowned artist Jeff Koons, shattering it to pieces.

The shiny blue sculpture, one of Koons' famous balloon dog" series, was valued at $42,000 (35,000).