The train is meant to model the mid to late sixties. The 2 6 axle locos (the ones on each end) are Athearn models of Santa Fe SD39s and both are sound equipped. The paint scheme is referred to as dress blue or pinstripe, and preceded the more widely recognized yellow bonnet freight scheme that many Santa Fe freight diesel models come in.
The two 4 axles diesels in the middle are Kato models of Santa Fe GP35s, also in the pinstripe paint, which were built in 1962-63 or so. One of these is sound equipped and one has a non-sound DCC installation.
Finally the 2 bay hoppers are a mix of Athearn ready to run models and Accurail kits. They represent 50 and 55 ton capacity hopper cars that were the standard size until the 70 ton, 3 bay hoppers started replacing them in the late 50's and early 60's. Santa Fe was never a big coal hauling line (unlike the Rio Grande, for example) but nevertheless did move coal for customers, such as power plants, along its routes.
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