(a) Intentional acts.--No person, except an artist who owns and possesses a work of fine art which the artist has created, shall intentionally commit, or authorize the intentional commission of, any physical defacement, mutilation, alteration or destruction of a work of fine art.

(b) Gross negligence.--In addition to the prohibitions contained in subsection (a), no person who frames, conserves or restores a work of fine art shall commit, or authorize the commission of, any physical defacement, mutilation, alteration or destruction of a work of fine art by any act constituting gross negligence.

(c) Definition.--As used in this section the term “gross negligence” means the exercise of so slight a degree of care as to justify the belief that a person acted with indifference toward the physical integrity of a work of fine art.