Here we have 4 N.E.G.M. Co. insulators in Blue color to Blue Aqua and Aqua. From left is a nice Blue with pointed dome and an inner skirt with an oval shape and also lopsided, has 3 lehr kisses on crown from factory and one wee base chip at back so VVNM. Next is a Blue with flat dome and a nice 1 inch steam bubble in rear plus smaller bubbles and other than a couple base nibbles its VVNM. Next is a Blue Aqua with the pointed dome and this piece has a really warped underpoured bottom and inner skirt as well. Has an upper wire ridge flat paper thin flake so VVNM. Last is an Aqua with a huge bubble at the beginning of the embossing and few other bubbles as well and this is a flat dome variation. Has a wee base nick so VVNM. All four have unique characteristics and would make a great addition to a collection. Asking $35.00 U.S. + shipping. I prefer Pink International Postal Money Orders and cheques. If you wish to use PayPal add $2.00