Thought I would post this pic as well of my favorite insulators in my collection. All three are of course 131 Tillotson's. They are all the [020] embossing. The color ranges on these goes from a sagey tint on the left to aqua in the middle to a little more of a blue aqua on the right. There are at least two molds for this embossing variant as the insulator on the left has 1/16" larger lettering on the skirt and dome. The insulator in the middle and on the right are from the same mold.