I was shopping for a 2657 prewar caboose, and I noticed in the Greenberg's Guide that there is a 2657 and a 2657X. Now I know that Lionel made at least two variations of this caboose, one with stamped lettering and numbering and one with silver plates. Is that the difference? There are a lot of other rolling stock items that have similar X distinctions. What does it mean?
Original Post