No, there was never a Lionel post-war 0-6-0 steam switcher CATALOGED nor was there ever a Lionel post-war or pre-war locomotive numbered 656. The number 656 was used on a pre-war O gauge cattle car made from 1935 though 1940 although Lionel occasionally reused a pre-war number on a completely different post-war item.
There was a #403 steam switcher shown in the 1946 catalog but this engine was never made. In the image in the catalog (probably an artist's drawing and not a photograph) it is parked between two other steam locomotives so it’s not possible to determine if it was to have 4 drivers or 6 drivers and the text does not give that detail either.
Now there was also a poster produced by Lionel for dealers sometime in the mid to late 1940’s which showed an 0-6-0 steam switcher. I do not have a copy of this poster but I have seen examples of it. As I recall there were two different versions of this poster and I believe the difference was that one showed an 0-6-0 and the other one showed an 0-4-0 in its place. One version was also smaller. Maybe someone else has a copy of the poster and can provide more details. I don’t know if that poster has ever been discussed on this forum. You might want to do a search of the Forum’s archives.
HTH,
Bill
