This is the front valance from the 1969 Dodge Charger "General Lee" car known as LEE 1 / Petty Car used in episodes "One Armed Bandits" and "Repo Men" of the Dukes of Hazzard.
LEE 1 was jumped as a General Lee in episode 1 "One Armed Bandits" and then transformed and served as a double life vehicle in episode 4 "Repo Men" known as the Petty Car.
The piece was recovered in October of 2000 when LEE 1 was sold to a private party.