You don't see many threadless on the market in this kind of condition. Aqua 731 and the only thing to report are some fine hairline surface stress fractures that have been on the piece for 150 years. These are on the dome and one runs up the crown. Hard to see until you turn the piece a bit. Nice little skirt bubble for extra character I mean, come on, it's a threadless! Unbelievably clean base. Add one the hobby's most historic insulators to your collection. Heavily used on the Transcontinental Railroad. First signal style. One of only a couple of the first to become threaded. Known as the Compromise insulator.

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