This insulator has SN22 EIN090 (1883 & 1884 dates). There is a nice chunk of fire brick right between the two patent dates. There is a trail of snow from the E in FEB connected to the back of the chunk, which makes it look like a comet with a tail. The only damage is a eraser size chip to the petticoat and some rougness (chipping) at the start of the threads in the pin hole. $30 to include shipping in the USA.

I am also willing to buy or trade for CREBBs of character with single SN's that I am trying to improve. I am also looking for lighter shades of good colored diamond CD 102s and AM Tel & Tel CD 121 of distinction.