Glass Insulator – CD 133.4 PATENT DEC19.1871 DARK TEAL BLUE WITH MILK

Great piece, open bubble on back wire groove is the only flaw. Extra glass on base. Really cool and crude!

I am not an expert with Insulators. Please use the photo for color and condition information or contact me if you have any questions!

$310, plus shipping, I will be glad to combine items to save on shipping cost.