After they experienced problems with the new Mat'34 that was supposed to provide fast connections between the major cities, they used a locomotive of the NS 3700 class to replace them.

[2] The locomotives of the NS 3700 class had either a three- or four-axle tender to carry the necessary amount of coal and water.

In 1929 a tank engines version ("Tender jumbos") appeared with a wheel arrangement of 2'C2' (4-6-4) as the NS 6100 series.

A lighter tank engine was previously built by Beyer, Peacock & Company with only two inside cylinders and a slightly smaller boiler, the NS 6000 series.

Locomotive 3737 (allocated to Roosendaal shed) ran the last official NS steam hauled service from Geldermalsen to Utrecht Maliebaan on 7 January 1958, where the Spoorwegmuseum was already located at that time.

In the 1974 and '75 steam seasons, the locomotive was leased to the Stichting Stoomtrein Tilburg-Turnhout (SSTT), which operated a tourist train service on a stretch of the Tilburg - Turnhout railway line.

When an overhaul was needed in 2008, the Railway Museum announced that it wanted to use part of a subsidy received from the BankGiro Lottery for this, but at the end of 2008 the amount turned out to be insufficient.