Bob Witt wrote

> I don't believe I have seen this one. All-steel box car on an older narrow underframe.
> http://www.ebay.com/itm/311334395524

MRS had numerous bizarre rebuilds -- I've seen this one before, but this
is the first one I've seen with SLRX reporting marks. Actual numbers I have
for the MRS cars like this: 5004, 5055, 5118, 5157, 5178. There was another
style of rebuild in series 52xx as well.

Tim O'Connor