M&M's Christmas Train. Three Pieces of A Train Set. All Series One, But Unknown Vintage. Unknown Material, But feels like a Hard Plastic or Resin. Red is Engineer with a Christmas Tree Under One Arm. Bottom of Red's Green Train Piece  is Labeled Engine. Sexy Green is on The Mail Train with a Dear Santa Letter in Hand. Bottom of Green's Train Piece is Labeled Car 3. Yellow is on the Red Caboose. Yellow's Train Piece is Labeled Caboose. All Come on Base that can be Removed. With the Bases Removed the Wheels Roll. All Colors Strong and True.