OK, from my collection, a Wallwork 4-2-2 Cast Iron loco, Is it a representation of a Dean Single Achilles Class? If not what is supposed to be, or is it freelance? The Wallwork foundry was in Manchester.
I have a mental image of an Victorian/ Edwardian boy pulling this (there are a couple of vans to go with the 6 wheel coach), around the floor, wrecking the furniture in Downton Abbey.