The original locomotive was retired into preservation two years later.
As of 2012, only eight of the original 17 locomotives remain in operation.
The track has been removed and the original locomotives were taken away in the 1980s.
The six original locomotives were withdrawn between 1858 and 1860.
The original locomotives had cost about $1.3 Million each.
In 1909 and 1910, the original locomotives also received this larger firebox.
The three original locomotives continued their traditional work around London.
All ten original locomotives remain in service, covering thousands of miles each year.
The frames and running gear of the original locomotive were retained.
The original 49 locomotives were scrapped by 1966 after an average service of 15 years.
