Recently re-painted Lackawanna number 663, now owned by the Tri-State Railroad Historical Society, was previously Central of New Jersey railroad number 57. The unit behind is Lackawanna number 664, ex-Bangor & Aroostock Railroad then Central of New Jersey number 56 is now owned by the Anthracite Railroads Historical Society. It is expected a B unit located in South Jersey will soon be painted to match making a complete A-B-A set. F3 cab units are 1,500-horsepower, B-B freight and passenger hauling diesel-electric locomotives produced between July 1945 and February 1949 by General Motors Electro-Motive Division.