Santa Fe Delivered in 1946, Santa Fe's first F3 locomotives featured a silver-painted body with red ''Warbonnet'' over the cab. A-Units originally had three porthole windows and a single headlight. Santa Fe was quick to make changes; removed was the center porthole window and added was a second headlight ? this is the version we have selected to produce. In later years, Santa Fe's F3 locomotives were rebuilt with new fans and side panels to duplicate the appearance of the newer F7 locomotives.Model Features ? Kato USA is pleased to offer a new production of N-Scale F3 locomotives with a revised, DCC Friendly mechanism that will allow drop-in decoder installation. This production features an all-new combination of details; it is the first time we will offer the F3 in a Dual Headlight version. Of course, each roadname will have appropriate Steam Generator detail according to each prototype railroad. Models will feature our smooth Kato mechanism with five-pole motor and flywheels, fully automatic magnetic knuckle couplers, and improved headlight color. For the first time, the Kato F-Unit will include Printed & Lighted Number Boards!