This Field Marshall tractor has been cut-away to reveal variouse features of its design, for demonstration and teaching purposes. This example is in the collection of R. Crawford, who has many unique Marshall and Fowler items collected over many years and from disposal sales by Marshalls and its owners. It is believed that this example was built by Marshall's for use at shows. Their are other examples about with one being in the Leeds Industrial Museum at Armley, which was built by apprentices as a teaching aid.