The design was taken up by Schneider, of Le Creusot, who built a 4-4-6 with 2.5-metre-diameter () driving wheels, and a forward cab for the driver. The two-cylinder locomotive had Walschaerts valve gear and a double-lobed boiler of nickel-steel. The locomotive was exhibited at the International Exposition in Paris in 1900, and the trials were undertaken on the Chemin de Fer de l'Etat line between Chartres and Thouars. A speed of was attained hauling a load of .