Dart swinger rear window glass seal [new]

I have a new window seal out of a 1970 Dart Swinger. The seal was only installed for a month. I got the car as a parts car and parted it out. The seal is in brand new condition. I am not familiar with the Dart glass but my Duster has a small rope piece of rubber that also goes around the seal. This is a seal only. It is the seal the actual glass fits into. I am asking $50 plus shipping. Its half the cost of a new one. I am located in Fredericksburg Va 22408