Searching the internet I found this bio about Mi Loco and Min- I -Scale .
Lee B Green was an inventor in the auto industry and was granted many patents
Min-I-Scale marketed just two heavy weight passenger car models, a coach-combine and this12 section sleeper.
His name was Lee B. Green and he was a Cleveland area model railroader with a dream of creating exquisite scale models for the then burgeoning O Scale market. During the mid 1930's he found the capital to launch a line of 17/64 O Scale diecast trains that he marketed under the name of "MI-LOCO" (The Miniature Locomotive Company). To build these trains he contracted with Congress Tool & Die of Detroit, a company well known for doing casting and stamping work for the auto industry. After successfully completing a New York Central Hudson and PRR K5, he ran into financial difficulties selling his trains, in part due to competition from similar trains offered by both LIONEL and Scale Craft. In 1937 Green liquidated his train business even as he was about to market two very impressive heavy weight Pullman cars. Congress, probably his biggest creditor, took over the line and began marketing Green's trains themselves under the name "MIN-I-SCALE." But they, too, discovered that this was not an easy market to penetrate and wrapped up their train sales by the end of 1938. That's a thumbnail of MI-LOCO and MIN-I-SCALE.
The classic heavyweight Pullman up for auction is a handsome and rugged rendition of the prototype that Congress boasted in their advertising "had "more than 3,200 rivets" (see photo of November 1938 advertisement in MR). It appears to be complete and in excellent condition - especially considering that it was made about 75 years ago.
Cheers Carey