Rotring mystery pen

Need help!
I want to find out more about a Rotring brushed gold roller ball pen that was made around 1980. I virtually ran into a wall no info anywhere I contacted Rotring, Inc. in Germany and they did tell me that one of the employees there remembers the pen as being made by them in the 80's but could not give me any more info as to it's type or name because no one there can find any information.
If anyone is familiar with this pen or can suggest who to contact to get more information that would be really appreciated.

Thank You!!