Here is a Lionel postwar classic straight from 1958: the Texas Special Alco units AA: one powered and one non-powered.
These are classic made in the USA postwar Lionel Alco diesels. As you know, these are more traditional 027 in size than full O--they are smaller form than the big F-3s.
Great with your postwar freight or silver streamline passenger cars.
CONDITION: C-6. Tested and runs. E-Unit works. Cosmetically: Apron on front has been broken and repaired at one point; rubs, scuffs, etc. Dummy unit has a broken out screw hole, rubs, screws, paint nicks, etc. No box.