This is a Star signal (F-Skirt) ★ SB in Blue Aqua with lots of fine white snow and massive dome glass. It has what appears to be a fairly substantial inner skirt. There's some question, however, whether this is intended to be an actual inner skirt versus a "pushout" caused by the extra thick dome glass. As such, is this piece a CD 161 EIN [010] or a CD 134 EIN [010] (F-Skirt) ★ SB?

I've tried to show the inner skirt from different angles. It seems to me that it's too thick and well-formed to be an accidental overpour or pushout. I've seen other insulators that don't normally have an inner skirt (e.g., CD 102, CD 104, CD 106, etc.) with thick dome glass causing a pushout around the start of the pinhole that looks almost like an inner skirt, but those are usually very thin, short, and almost flimsy. This ain't that.

I also note that the separation point between the outer skirt and the inner skirt on this piece begins at the top of the inside of the outer skirt at the level of the wire groove despite the extra thick dome glass while many insulators with thick domes and inner skirts have that separation point much lower on the outer skirt, often at or below the embossing.

Finally, the threads themselves on this piece extend all the way to the bottom of the inner skirt, which is not a common feature of inner skirts generally, so the view that this is really a CD 134 with a pushout, not an actual inner skirt, may be valid. Any other thoughts?

UPDATE:

Don B. responded: "It appears to be a CD 161. The only time I've seen an inner skirt that well formed when it shouldn't be there, it left a large cavity in the dome glass when the plunger was removed."

By contrast, Paul G. said: "[I]t is a 'pushout' as you call it. I've seen these on several other CDs including 121 and 133, and I think almost always with Elmer NJ companies. I think it is actually caused by suction that is created when the plunger is pulled out without rotating the threaded mandrel, which pulls air into the mold around the outer skirt seam and pulls the threads toward the bottom of the insulator. This has the effect of creating thicker dome glass and fills in the inside skirt area with air."

Similarly, Brian R. noted: "I think the star is a CD 134 with so much dome glass it's pushed out a ring of glass that looks like an inner skirt. I have a CD 133 star that's the same way." Brian also sent me photos of his CD 133 Star with a pushout/inner skirt nearly identical to the one shown here.

See [id=703473519] for further info/discussion.