That's exactly what I thought.
![Smiley :)](http://www.glassmessages.com/Smileys/classic/smiley.gif)
It does have extra facets around the bottom, when compared to the colour cased ones with etchings on the base.
I don't imagine that means anything at all. It doesn't have engraving, it isn't cased in a colour.
The extra facets could be the "extra feature" on this particular weight.