For sale is this nice CD 190/191 Diamond Transposition insulator with the lower part a much lighter color than the top. The lower portion has the vertical "diamond" logo on the lower and upper part of the insulator. Upper portion is almost what I'd consider royal purple. Nothing glaringly wrong with either piece, just the usual flaking where the two pieces meet when threaded on the pin. Very nice tramp for those of you who might be seeking one of these. $125 shipped. First email takes it.