Richart Company 1987 TTOS Convention Powered Mine Car / Standard Gauge / MIB // Mint in Box / Approx 8 to 9 inches long. Anything seen in roof is a light reflection. I believe that this engine was made to go with the mining car set made by Dick Mayer of Rich-Art Trains. It is shown and discussed in the book "Not Your Daddy's Standard Gauge - A Guide to Modern Standard Gauge Trains and the People Who Made Them". It is a truly awesome book - over 600 pages and hundreds of color pictures. Combined shipping available.