Unused, old linen Curteich-Chicago card 8A-H2913.  The front is as you see in the photo.  The reverse, however, is mis-registered, printed upside down, and has a caption for the RCA Building in Rockefeller Center in New York City.  There is also the red outline on the reverse of another apparent error.  Clearly this happened during a switch in print runs.  Hard to grade accurately, but for what it is, we give it Grade: 1