Designed as heavy goods locomotives, the class gained the nickname of “les Bœufs” (“Oxen”).

[3] Several locomotives were refitted with Lemaître exhausts;[4] this increased the power output by 100 horsepower (75 kW) due to reduced back-pressure.

Only 140.A.259 has been preserved, without its tender; it is in the collection of the Cité du train in Mulhouse.

It is displayed on its side to evoke the acts of sabotage performed by railwaymen at the time of the Resistance.

[6] An HO scale etched brass and white metal kit of the Nord 4.061-series is available from the British manufacturer DJH Model Loco.