Controller. This set contains a post war German Metal Train Set by Fleischmann from the 1950's. It has the engine car 325 GFN (With Damage to cow catcher), (2) Red 402 passenger cars, an Esso GFN 46585 Tanker, Reichelbrau DR 46181, and 403 Red Car, Log Car, and Tender. The track is as follows (34) 8-1/2" strait track, (31) Curved Track, (6) Small Curved track, (4) Strait track with wire slots, (5) 1-1/4" track, (7) 1-1/4 track. (4) junction track pieces, and 2 end of line pieces. It has the Fleischmann Transformator Tr 50 power transformer / 110V 50 Hz. See photos for more details.