This listing is for an antique toy train engine made by Lionel in the 1930s. It is made of black steel and marked "1666E" on the sides. 

It measures 9 1/2" long.  

Condition: Poor. This piece was recently found in a garage where it had been stored for decades. Needs cleaning and has not been tested.  There is a lot of rust and discoloration on the paint. See close up photos.

Check my listings for more vintage and antique Lionel, American Flyer, Marx, and Revell trains from the same estate.