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Locomotive Phases and Rosters

Phases refer to incremental changes or improvements over a the production of a locomotive model. They generally indicate minor cosmetic differences and are thus rarely, if ever, used by railroads and builders. They are not official model designations.

Whenever possible, I have based phase information off existing, well-known phase descriptions. In some cases, I've modified the existing phases slightly based on my own observations. When I haven't been able to find existing phases, I've created my own. I include almost all phase differences in the drawings, except when it's not practical to draw them (such as with end plate differences in side views).

I've been adding additional phase descriptions as I research locomotive models for making the drawings. While I've attempted to ensure the information is accurate and complete, there may still be errors or omissions; please let me know if you find any.