Didn't the equally beautiful Weaver brass GG1 have essentially the same chassis as the Williams? Years ago I had the 1st issue Weaver which didn't have flywheels but was exquisite in detail and especially the paint finish. They were $800 when new but were the first readily available 3 rail scale model. No fancy electronics with just a horn. (There was a House of Duddy model produced previously but I've still never seen one personally.) It ran very smoothly and Weaver added flywheels to the 2nd production run.