Most of these vehicles were constructed in workshops on Java, particularly around Surabaya and Bandung. They were built on commercial truck chassis, often American makes such as Chevrolet or Ford, which were readily available in the colony.

Armour plate was added in a boxy, riveted or bolted form, creating vehicles that looked more like armoured lorries than purpose-built fighting vehicles. There was no single standard pattern.

Each batch, and sometimes each individual vehicle, differed depending on the truck used and the armour available. Production numbers are unclear, but they appear to have been small—probably only a few dozen in total.

The two Overalwagen completed so far.

This second model is also from Mad Bob Miniatures and will be used in my KNIL East Indies Bolt Action army.