Pennsylvania Railroad 1223 is a 4-4-0 "American" type steam locomotive built in 1905 at the Altoona Works for passenger service. After being retired from active service, the locomotive ran excursion trains on the Strasburg Railroad in Strasburg, Pennsylvania from 1965 to 1989 when it was removed from service as it required extensive firebox repairs. Currently the engine is on static display at the Railroad Museum of Pennsylvania in Strasburg. It was listed on the National Register of Historic Places in 1979. The 1223 is the only surviving example of the Pennsylvania Railroad Class D16sb.
