Well, here's the GG1. She is about 30" long and weighs about 30 pounds. Everything appears to have been designed so that it could run 24/7 for years. I cannot imagine any model locomotive, other than a big, live steamer, that has been engineered like these Gold Standard Engineering GG1's. The fellow who produced these, Robert C. Hendrich, actually lived in Glendora, a suburb of Los Angeles. I believe we were both members of TCA Western Division at the time, but I have no memory of ever having met him or seeing him display these gorgeous models at a meet. Only 58 of these GG1's were built, available in Brunswick Green as mine is or Tuscan Red. I wonder if one is rarer than the other?