(CNN) Visitors to the gallery of US presidents in the Colorado state Capitol could be excused if they did a double take this week.

There, displayed near paintings of George W. Bush and Barack Obama and in a space set aside for President Donald Trump, was a portrait of a very different president:

Vladimir Putin.

According to the group that funds the portraits, the mug of the Russian leader was placed in Trump's would-be spot by an unknown prankster Thursday morning. It was discovered during a tour.

This might not have happened but for one problem: The state hasn't raised the $10,000 needed for a Trump portrait, leaving an empty spot on the third-floor rotunda in Denver.