Schwinny
I live for the CABE
Quite possibly the best one out there, this stem has no damage, no marks, works perfectly and will make you a sandwich when you're hungry. 
It hasn't been cleaned at all other than tsp when I first got it over a year ago. The original patina remains. The bolts are the original "AS" and have the proper amount of age spotting yet very good. And as you can see, the wedge bolt is really nice. The only actual rust is on the bar bolt nut, and it is surface stuff that can be wheeled off if you choose.
Like I mentioned, it is quite possibly the best one you will find if you are in the looks for one of these.
I am firm at $280 plus $10 for Priority shipping (keeping it under $300)
It hasn't been cleaned at all other than tsp when I first got it over a year ago. The original patina remains. The bolts are the original "AS" and have the proper amount of age spotting yet very good. And as you can see, the wedge bolt is really nice. The only actual rust is on the bar bolt nut, and it is surface stuff that can be wheeled off if you choose.
Like I mentioned, it is quite possibly the best one you will find if you are in the looks for one of these.
I am firm at $280 plus $10 for Priority shipping (keeping it under $300)