One of my favorite insulators!! Check out that MASSIVE enclosed rear skirt bubble in this DARK Brookes Blue CD 133.1 HOMER BROOKES PAT R- C / AUG 14 1883. Some light milk and even more bubbles up front!! Four pencil lead point ticks, super flat front base 9/16" open bubble and a tiny open bubble on the rear upper wire ridge are the only flaws!!! $ 225.00 includes shipping.