Came with a No. 218C B unit that sometimes came with or without the "BLT 8-57" date. For close-up pictures of the difference see No. 215 and No. 218. The No. 218C B Unit is the only unit of the Alco Series that was not numbered.
The above pictured A & B Units came in Set No. 11385 issued in 1963. There are no Variations.
All of the Lionel Alco FA units are designed to work on the tighter radius of O27 Gauge track, but they will run equally well on O Gauge track.