This is a CD 235 Pyrex, one on the styles that was often used as high voltage 440V markers on the outside of the crossarm for the RR signal circuits. You have read on ICON about people getting electrocuted, or serious burns and tingles trying to pick these... Don't you be one of them...

This is pretty much mint, but the carnival is not the darkest, and has a few streaks here and there with the carnival missing. Picture is with top lighting. Carnival can look odd with heavy back lighting.

PG is $40-50 on these. Let's really entice you not to climb poles, or even take a look at other ones for sale. First email with USPS shipping address included gets it for just $20 !! Now, knock it off to $10 and see who is watching... plus actual shipping.