I aquired about 30 of these Spanish insulators a couple of weeks ago. Many had unusual junk. Caveat: I borrowed a friend's camera. All of the pictures I took suck, but this picture (underlit through glass with no flash and no focus) at least somewhat highlights the milk stringers in these particular pieces. CD 154 ESA / CTNE insulators in green-aqua with rubber band style milk-steam stringers in them.