Postwar Lionel O Gauge 2343 Santa Fe F-3a shells 2-black (one has original postwar porthole lens other has reproduction lens, both have the X carved in underside rear of shell), 2-yellow (one has reproduction porthole lens other is missing lens and a front hand rail/grab), 1-gray mold (reproduction porthole lens).  Trains all have screened roofs and windshields and appear to have good screw mounts.  Some have some repainting/touchups, nose decals are in excellent shape.  Nice group of shells.