Here are examples of the different New England Tel & Tele Co. Spools and cleats I've come across. Notice the Telephone nail knob in the center. I have many more with different types of the names embossings on them. Someday I would like to find ones by Southern Mass Tele Co. Elton Gish has several pictured on his wonderful website. Go check it out it is worth the look if your into porcelain. Would love to find any catalog pages showing New England Tel & Tele Co. knobs and insulators. Eventualy as companies merged and dissappeared, they settled on standard knob and cleat styles simply marked U.S.A. These were made by Porcelain Products Inc. and other companys. The military version was simply marked with IN-75 with or without the U.S.A. I have several different styles of that embossing as well. Neato.