In 1959 the
South Australian Railways placed an order for 10
Alco DL531 locomotives for use their narrow gauge network. Further orders saw the fleet built up to 44 by February 1970 with 15 narrow gauge, 12 standard gauge and 17 broad gauge examples.
This example is in O Scale 6.35mm to the foot and is suitable for standard O gauge track or On 42 or On30 scales this is only the body shell head codes and exhaust stacks are also available.