This might just fit the bill...a Marx Electric Train from the 1960s. According to Wikipedia, the Louis Marx and Company was a toy manufacturer from 1919 to 1978. In addition to the electric train set the Joliet resident is selling on Craigslist, they also produced Rock 'em, Sock 'em Robots and the Big Wheel.
I'm not sure of the details of the set that is being sold in Joliet, but the seller lists a phone number on the ad. Click here to read more.