Postwar Lionel ZW 275 Watt transformer in original box tested and working. I tested each output and they ran from 7-21 V. They did not start at 1V, as soon as I engaged any of the four levers, each one would go directly to 7V then incrementally to 21V. The case is in excellent condition and the cord has been replaced and is supple and in perfect condition. The original box was scalped and it is somewhat brittle with the bottom insert and the top insert is stuck to the lid of the box.