5 and 20 D-mark

Is there anyone out there that has a West German (Banknotes)20 D-Mark 1980 issue and/or 5 D-Mark 1991 issue? And what would you swap for them? I also save the old German Mark if someone like to swap banknotes or coins. I also have some world banknotes for swap but there is no where to list them. Thanks and have a nice day.