This insulator is a MLOD CD 127 embossed "W. Brookfield / Cauvets Pat" on the front dome (no W.U.T. Co.) and "55 Fulton St N.Y. / Feb 22 1870" on the back dome. There is a large "I" which separates both the 55 Fulton from St N.Y. and Feb 22 from 1870. You can see from the picture that this is a very unique mould style and maybe the prototype for the W.U.T. Co. insulators. This insulator was purchased many years ago from a Ray Klingensmith auction.