PO n° 23 "La Fronde" (Ivry works, 1855). First numbered as PO 285, renumbered 23 in 1872, and scrapped in 1888. It was a Polonceau design with "Crewe" type outside frames and inside Gooch valve gear. Collection Jean-Pierre Vergez-Larrouy (jean-pierre.vergez@tele2.fr)