someone was saying that you can get em at nissan, and they are cheaper than aftermarket mobs too

Hi all, does anyone have a genuine rear window seal for a 1200 coupe? Preferably brand new but good secondhand will be fine. I know there is after-market ones available but u can't use the original stainless-steel mouldings that go round the window because the rubber is different (as is my understanding). I want to do a fully original resto on one of my coupes and this is the main thing that's bothering me. If anyone can help it would be greatly appreciated. My e-mail is dattodoctor@hotmail.com
Cheers, DattoDoctor