Light Green with Milky Swirls
The CD146.5, embossed only with a vertical bar on the front skirt, displays several traits common to insulators made by the King City (Indiana) Glass Works.
This style of small telephone service insulator was likely made by K.C.G.W. in the 1890 to 1897 time period.
Found in an antique shop in north Mississippi in 1997, this one was purchased for $5.00 (plus tax).