Southern Railway 1643

Southern Railway 1643 is a steam locomotive built in 1905 by the Pittsburgh Works of the American Locomotive Company for the Southern Railway. It is a 0-6-0 Switch engine of Southern's A-7 class.

In 1952, the engine was sold to the Morehead & North Fork Railroad in Morehead, Kentucky. Renumbered 12, the locomotive operated on the M&NF until the road dieselized in 1963. After the engine was retired, it remained stored in one of the road's engine sheds. In 2011, the engine was purchased by Jerry Jacobson, and moved to his Age of Steam Roundhouse in Sugarcreek, Ohio. Here, the engine is planned to be restored to operating condition.