PLM 231 C 1 (ex 6001. ateliers de Paris n° 493/1909). This loco was built as a saturated 4 cylinders compound prototype on a PLM chief engeener Chabal. It was rebuilt as a compound superhated loco in 1912. Renumbered 231 C 1 in 1924, it was take over by SNCF as 5 231 C 1 in 1938, and scrapped in 1949. Collection Jean-Pierre Vergez-Larrouy (jean-pierre.vergez@tele2.fr)