You know it's a Waring when it's a blendOr. I have the same model only a bit older, chrome and the SS jar doesn't have that ring around the bottom, it's all one piece basically. Why on earth they kept changing the couplings is ridiculous, at least Oster stuck with the same coupling up until about 2 years ago, any jar, any era always fit, except for the early cocktail bar mixers.