Not a Wilkerson made piece and is authentic. Rare honey amber and yellow amber base color mix radio type insulator. This was intended to be screwed to a flat surface and has 2 holes in the base for the screws as seen. 1 small chip to the raised shoulder of the one screw mount lip and a tiny, NGM fracture to the raised shoulder of the opposite screw hole. I see a few other tiny pin pricks and fleabites on the ribs. No embossing and your satisfaction 100% guaranteed. More pics on your request. $450 PP in America.