ATHG2063 HO GEN AC4400CW Locomotive w/DCC & SOUND, CP #8621ATHEARN GE AC4400CW DIESEL LOCOMOTIVE PROTOTYPE AND BACKGROUND INFO: Introduced by GE in 1993 and built until 2004, when it was replaced by the Evolution Series Tier II compliant model, the AC4400CW is a staple of modern railroading. 2,834 examples were built with many still plying the rails in their as delivered configurations or as rebuilt variations. Many Class 1, regional, and foreign railroads purchased the AC4400CWs. Ownership spanned the North