The only narrow gauge locomotives constructed by MACOSA was the type 130 for the railroad of Ponferrada to Villablino in 1951 and 1956 (PV numbers 13 to 16), which were based on a type made in 1914 by Krauss-Maffeu for the Basque Railroads.
Las únicas locomotoras de ancho métrico construidas por MACOSA fueron las de la clase 130 para el tramo de Ponferrada a Villablino en 1951 y 1956, basadas en una serie fabricada en 1914 por Krauss-Maffei para los ferrocarriles vascos (ver Locomotora Engerth).