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5778c&o Life-Like Proto 2000 GP7 #5778...
One of several units returned to the Chessie System from the South Shore in 1981, #5778 lasted for several years in a rather unique paint scheme.  It has the smallest "C&O" lettering I've ever seen and it wore the original #1506 numberboards, despite wearing #5778 on the sides.  These units were renumbered to make room on the C&O roster for the GP15Ts.

Below is the prototype photo of #5778.

Below are two shots of the finished model.