Well, I just ordered one from Trainworld yesterday, so I'll give you a comprehensive review in a week or so...sound good?
Well...the AT&SF was one of the first to pioneer this class of locomotive, along with earlier pre 20th century examples on the LV, and the ERIE.
(THE Following is a QUOTE from Wikipedia, Retrieved from the link Below, Feb, 25th 2007
"The first boost in the number of Decapods occurred when
Imperial Russia ordered approximately 1200 Decapods from American builders during
World War I. When the
Bolshevik revolution occurred in 1917, over 800 had already been delivered, but more than 200 were either awaiting shipment or were in the process of construction.[
citation needed] These stranded locomotives were adopted by the
United States Railroad Administration (USRA), the body created by the Government to oversee and control the railroads during the War, converted to American standards, and put to use on American railroads. Small and light-footed, these Russian decapods proved popular with )smaller railroads, and many of them remained in service long after the USRA's control of the railroads ceased. Many indeed lasted until the end of steam on those railroads." -Wikipedia, 2007.
Here's in INCREDIBLY weathered Decapod (same one as bachmann makes) in China, somewhat recently STILL IN SERVICE (circa late 1980's)
http://www.modelrussianrailways.com/images/china/cdecapod.jpg
Look around ATSF railfan.net for perhaps more info.
Enjoy!