0-6-6-0 Fairlie...in Real life was Lehigh Valley Railroad "Janus"

[LV628]

According to this article: http://oldtomstoys.com/2013/12/13/lehig ... s-0-6-6-0/

Janus, or as most of you guys know her as "Fairlie" wasn't much of a success, I thought it was more of a success (must of have been thinking of another engine). Used in pusher service out of Wilkes-Barre of the mountain. Blt: 1871, Scrapped 1877...6 years old.

[Gumboots]

Doesn't appear to be the same locomotive. The RT3 model is different, and although Janus may have been the only double-boilered Fairlie in the US they were more common in some other countries.

I suspect the RT3 model was based on this one:

In Mexico the Ferrocarril Mexicano (FCM) used Fairlies on a mountainous stretch of line between Mexico City and Veracruz, where 49 enormous 0-6-6-0 Fairlies weighing about 125 short tons (112 long tons; 113 t) apiece were imported from England. The largest and most powerful locomotives built there up to then, they were used until the line was electrified in the 1920s.