These are CD 187s, smallest of the two styles of Duplex insulators. From left to right: Pat'd date embossing, a small chip at the top edge or lip / middle Browns Pony has a distorted top lip like it was too hot, has the pat'd date embossing, chip in the wire groove and wire rubbing wear...definitely a piece that was used / the far right piece is like it was under poured, a bit lop sided, There is an area on the base that looks like damage but is really an under pour ..it has a lipped area which may have made contact with something and is slightly bruised and whitish. All three pieces for $30 plus postage. PayPal or personal check. Jim White Check out my other ICON listings under Jim White / For Sale