This really nice and rare HO gauge loco by Atlas is 9019 a GE Dash 8-40B diesel loco in Cotton Belt Railway, it has running number 8087;

The Dash 8 Series is a line of diesel-electric freight locomotives built by GE Transportation. It replaced the Dash 7 Series in the mid-1980s, and was superseded by the Dash 9 Series for freight usage and the Genesis Series for passenger usage in the mid-1990s. All models of the Dash 8 Series are powered by a 16- or 12-cylinder, turbocharged, GE 7FDL 4-stroke diesel engine.

The design of the Dash 8 Series is based upon that of the Dash 7 Series. The biggest changes introduced during the production of the Dash 8 Series were the first use of a microprocessor-equipped engine control unit in a diesel locomotive, and the adoption of a modular system in the construction of the vehicle body.

The Dash 8 locomotive bodies were assembled from several modules, creating a combination to fit the length of the chassis. On models with a traditional narrow short hood, the part of the equipment room immediately behind the cab is taller than the top of the rounded cab roof, giving those models a distinctive appearance. On all models, that part of the equipment room houses the cooling fans for the dynamic braking system.

The GE Dash 8-40B (or B40-8) is a 4-axle diesel-electric locomotive built by GE Transportation between 1988 and 1989. It is part of the GE Dash 8 Series of freight locomotives.

A total of 151 examples of this locomotive were built for North American railroads. Substantial orders for the model came from ATSF (40 units), Conrail (30 units), New York, Susquehanna and Western Railway (24 units), and the model's biggest customer, St. Louis Southwestern Railway (54 units).

There were also small orders from Providence and Worcester Railroad (4 units), the United States Department of Energy (Savannah River Site), and a GE demonstrator unit.

Power output: 4,000 hp (2,980 kW)

The loco is in good condition as you can see in the pictures, it is fully tested and runs with working lights. It comes complete with its box. The box is in good if slightly shelf worn condition. 

Overall this is a really nice scale locomotive and would look fantastic on a layout.

Do please have a look at our other listings, we typically have various HO and OO locos on offer as well as an extensive range of imported N gauge locos and other items. 

Note: We do recommend all locos are cleaned & serviced, as they have some age to them even if the quality looks at the highest level (fairly standard advice for all locos!).