Chemex responded promptly to my query. I asked, "How can I tell whether it is the three-cup classic CM-1C or the three-cup handblown CM-1? What are the distinguishing characteristics? What should I look for?"

Chemex' response (edited for brevity), "Taking a look at the bottom, if there is a X molded into the glass or the word Chemex present, then you probably have a classic series brewer. If there is no X or the name Chemex on the bottom, then it may be a hand-blown carafe."

They invited me to send photos. After viewing photos, Chemex opined I have a hand-blown piece, further responding, "Some other ways to tell that this is a hand-blown carafe is the thickness of the glass and the green hue that can be seen emanating from the edge of the glass. The hand-blown carafes are a little thicker than the classic series."

They still make handblown kettles.

Has anyone of you experience pouring from one of these? Can it pour like a gooseneck?

Flint, I'm going to go out on a limb and guess that this won't pour like a gooseneck kettle based on its shape. It has a much wider aperture, so there's more room for water to slosh around.