These four colorfull insulators were found on poles in Oklahoma. The Green CD 121 and Cobalt CD 162 came off a pole near Wellston, OK about 1965 or '66. The Carnival CD 234 came from a FRISCO pole in Holdenville, OK about 1972 and the Purple Whitall-Tatum CD 154 came from a pole in south central OK about 1971.