This BLUE No. 9 CD 106 has solid dome glass from the wire groove and up...It has the dome top almost like a Duquesne as you can see in the photo. It's in excellent condition. Take this one for $ 6.00 plus the shipping. ..........On further inspection, the dome glass only starts at the top of the upper ridge. Originally it looked like it extended to the wire groove, but it was only that there is no threading up past the groove and that's what I was seeing as an extension of the dome glass. Still a very nice piece...still take it for $6.