I recently acquired the Micro-trains 5 pack of Great Northern heavyweight cars. A very nice set, but, I noticed something odd... the Obs Car doesn't have a number nor a name. I was wondering if this was a normal occurrence for Empire Builder heavyweight Obs Cars. I couldn't find anything on-line (tried Jerry Laboda's site) and didn't get an answer. I believe the Micro-trains 12-1 Pullman is a prototypical car for Great Northern... and found one named Superior. Anyone have some more details about GN heavyweight Obs cars?