Took a Sunday drive 2 weeks ago, spotted some utility workers near Placerville Cal. doing pole transfers. After obtaining approval from the family to stop, I strolled over and asked what was in the trailer. They gladly pulled out a half dozen clear Hem 20's still on wire and steel pins, then pulled out this. Just a Mc 20, but a nice sky blue. Still on the pin and wire, fresh off the line. Even after 4 decades of collecting, finding even a common insulator is still just plain fun. Hope you liked the story.