Interesting.
I've never seen one of these before.
(http://www.lscdata.com/users/cabby/_forumfiles/S1030892Medium.JPG)
Lionel Trainmaster 150 watt (AC) Type V.
Controls 4 trains.
Made a 0.7 watt N power pack leak all its electrolytes.
Joe Satnik
Most a pre-war transformer. There was also a 250 volt version called the "Z". A few were either made postwar, or carryovers from pprewar stock. Newer transformers took over, having whistle and directional controls. (Guess they used the "Z" concept for the "ZW".
I have a Type V 150. A friend of my dad's gave it to me back in the early 60's. I have replaced the carbon rollers. I only use it for acc. and lighting. Can't trust the breaker on the engines.