The green one on the left I retrieved off the ground when they wrecked out the C&O line in Western Cincinnati. It was one of the 440 volt lines. The aqua one on the right displays the recessed inner skirt variation which is found on some of these. The inner skirt is about 1/8" from touching so it sits flush on the outer skirt. The CD 226 has an alter ego in porcelain, the U-611A which it was probably modeled after.