Here is one of my acutal finds on our line. Previous to this i had found a top, and a bottom from 2 different insulators. Then finally on another hunt, found this one complete.

only has one chip on the upper wire groove (will post a 2nd pic)

$30 + Shipping

to USA By Air mail, $9.90 no tracking and 6-10 business days to arrive By UPS 12-18 with tracking 3-8 business days this is shipped from Canada, so sorry for the high shipping

to Canada, by Canada post expedited parcel, send postal code for a quote.