This CD 138.2 is perfectly base embossed THE STANDARD GLASS INSULATOR CO. BOSTON MASS. This is the usual light blue color but there are unsual white swirls in the dome and skirt. I can`t remember seeing this much swirling in a Standard piece. Looks like the lineman left us two pecks on the upper ridge of the wire groove and two more just below the wire groove in the same area. Other than those little blemishes it is a near perfect insulator. This is certainly one of the nicest Standards that I`ve had to sell in quite some time. $100 delivered in the U.S. or Canada.