This is a close up pic. [id=352032481] for a look at the comeplete insulator.

Think it is a broken off metal saw tooth blade but can't say positively. It is positioned about centered near the top of the dome in the front. Like I said it looks like a saw tooth. It is as about a wide as one would be when looking down from the top as well. This insulator also has bubbles, many seed bubbles, some milk deep inside towards the threads in the front, some easily seen scattered piece of other junk floating around the blue aqua colored glass. On the rear side there is also a green stringer coming down over the threads from the top. The unidentified object also has a thin trail/tail that leads to that much sticker stringer in the back.

If I could positivily identify the object in the dome you could bet I'd be asking quite a bit more. Asking only $50 shipped for this one within the lower 48 US States as is. Add $5 to ship to Canada and email me for quote if you are from someplace else on our planet. I will assist. I will also combine shipping. Will accept Pay Pal in a non-fee mode, personal and money order checks from first emailer.