CD 133 [230] Brookfield. Embossed on the front W. BROOKFIELD / 6 / 55 FULTON ST./ N.Y. Emossed on the back CAUVETS / PAT / JULY 25, 1865. This is among the earliest threaded insulators featuring only the 1865 Cauvet patent date. All of the embossing on the front and back of this one is super strong. Strong MLOD as well. There is a black carbon bubble streak in the front skirt and some white fire brick and bubbles scattered about. Nice pale light greenish aqua. Of all the [230] embossings, this one has the distinction of having the largest embossed patent date. Aside from some nibbling and a small base chip on the back, this piece is in super condition for its age. Picture of front available upon request. Price $30.00. First email. I will be offering another mold number in the series this evening as well. If you take the pair, the price will be $25.00 each plus actual shipping.