Lionel Girls Train Set - Classic Toy Trains Magazine

There have been three Lionel re-releases, each in its own way different from the original. 

The first re-release came during the reign of Richard Kughn and Lionel Trains Inc.  Strong points: the set had an original-style set box, PullMor motor in the engine, and the set included an ivory transformer with gold handle.

Weak points: different numbering system, no rivet detail on the boxcars, and no horizontal rivet row on the N5c Cabin Car.

Set number 2 came out as part of the Post War Celebration Series in 2001.  Strong points: rivet detail on the cars, and proper car numbers.  Weak points: no PullMor, no transformer. 

Set 3: part of the Post War Conventional Classics.  Rivet detail and N5c Cabin Car rivet row is back.  But... no transformer.  I have not inspected this set, so I can't speak to the motor.

Hope this helps a little.

Jon