Based on the Railway Clearing House standard tank wagon design of 1907, hundreds of these 12-ton wagons were used by private owners to transport liquid products, including fuel oil and kerosene, among other products. 

The tanks sat on a wooden frame and were secured using steel bracing straps. They were commonplace through the 1960s, when they started to be replaced by larger capacity tank wagons, though examples could still be found in use into the 1980s. 

This OO gauge model tank wagon example is in the distinctive ‘Mobil’ colour scheme.