The new boiler with the long, narrow Belpaire firebox came from the Nord "Super Pacifics".

With all the pipes, domes, and pumps, these were double-chimneyed, husky looking locomotives of very different appearance than the Pacifics.

These 12 4-8-0s were created to tackle the 1:100 gradients of the Brive to Montauban division of the line from Paris to Toulouse, steeper than those to Bordeaux.

These 25 4-8-0s were created by 1940 to tackle the 1:125 gradient of the Les Laumes to Dijon division of the line from Paris to Lyon.

Used in passenger and fast freight services between Paris and Lyon.