Picked these two insulators up at the same flea market two weeks apart. The CD 320 Pyrex 171 is lemon tint with silver strings in the wide flying saucer flange. The Brookfield 164 has chris-crossing amber in the dome along with lots of fizzt seed bubble. The strain was given to me by an antique shop owner who I just met that turned out to be a friend of a long time friend of my own.