Eva Kraus, the museum director, told The Telegraph that the damage done was not permanent and they would have it fixed.
"We do realize that the old lady didn't mean any harm," she said. "Nevertheless, as a state museum couldn't avoid making a criminal complaint. Also for insurance reasons we had to report the incident to the police."
Kraus added that the private collector who presented the piece to the museum "took the damage to the work in good humor" and she would not face any penalties.