This is Sunset 3rd Rail brass O-scale 2-rail CB&Q Mark Twain Zephyr articulated passenger train. The is a complete 3-car set (Injun Joe,Thatcher Tom, and Sawyer Burlington)  and an extra loose car (Huckleberry Finn).  These are currently not working so they are sold as is.  The diaphragm on most of the cars will need to be re-glued.  Each of the middle car has a missing brake on the truck but only one loose brake is included.  The loose car has a broken electrical wire at the connector.  The set comes in original box.  Please take a very careful look at the pictures for more info.  These are made in China.

Thanks for looking.