another dump piece. This one has several markings. The '"top rest" is marked 02 SET 10. an outline of an insulator with the word GAMMA inside the outline and a lightning bolt thru the word Gamma beside that marking the letters ANSI and the numbers 55-3 . Underneath that the word Columbia and the date 1998 Below that the number 250 . I tried to take pictures of the marking but they just won't show up.