These insulators also come with a letter B marked involving the wire groove and base. They also have the numbers 7,8,ten,11,12 and feature a dot at the major. The CD 141.9 Emminger’s glass insulator is an all-time classic collectors, even seasoned ones, drool at the word Emminger’s. The amber-colored insulators by H.G.CO are the lightest and in all probability most vibrant of all the colour vari