Stoomtrein Katwijk Leiden/National Narrow Gauge Museum - The Netherlands
Diesel locomotive 9 is the oldest diesel locomotive owned by SKL. 
It was built in the 1920s by O&K in Nordhausen(D) for the 
Rotterdam water supply (Drinkwaterleiding) and operated as number 124
until 1977.
Katwijk, 25-10-2025
Photo by Marco
van Uden