This 5” gauge John Bull locomotive was built by A Bryant and shown by Barney Evans at a Bristol exhibition. The original  0-4-0 loco was built by Stephenson in 1829/30 and shipped as a kit of parts to the Camden and Amboy Railroad Company in the USA. In 1980, after decades of storage and some modification, it was put back into steam and travelled more than1,000 miles. See also, here.