After buying this insulator, i noticed it had a little black tadpole in the rear dome. Quite an insulator, i'm very happy to have added this one to my collection. The bottom half of my display has quite a bit more amber insulators in it than the top half of my shelf now that i have this one. The top half of my shelf is behives, standard telegraph insulators (hemingray 40's and 42's, those kind of things) tolls and canadian glass, ponies, and finally large power insulators. I could probably stick an amber dominion-42 in the telegraph insulators shelf, that should even things out. Anyway, here's a picture of the tadpole.