No, There are two different "sets" that are brown "State" sets. The "Baby" state set has an engine that is 0-4-0 #318E. The State engine #408E is an 0-4-4-0 and is much larger (although both fit on standard gauge track). There is a misconception that "Baby" state means it's "O" Gauge. It is NOT! The passenger cars are different as well. The "baby" state set #309, 310 & 312 cars only have 6 windows and are much shorter. The State set #332, 339, 341 have 9 windows and are longer.