Doubtful one of these could be found any closer to absolutely colorless. This comp shot with the Pyrex should give a pretty good idea just how clear this piece is. A lot of bubbles and floaty white bits give added character. The signal specialist will know how special this piece is. Clean 1/2" flat base flake can be seen in photo and a couple rough spots to sharp edges are all there is to mention on this damage prone insulator.

$150 + shipping