Being from the north-eastern part of the U.S., I tend to notice North American locomotives more than I do European ones. This BR Class 47 by Carl Greatrix (bricktrix on Flickr) really stands out though. The two-tone green is a beautiful color combination, and really matches the prototype.
Carl has some other really great train MOCs in his photostream that are well worth checking out. His models are great inspiration. Espcially worth looking at is his Freight Shed Sidings scene.
