CD 133 index [230] Brookfield. Embossed W. BROOKFIELD / Large shop number 4 / 55 FULTON ST / N.Y. Back CAUVET'S / PAT / JULY 25, 1865. Strong MLOD and strong embossing. Great swirly thread start, bubbles, etc. A very nice extremely early piece of threaded glass. For sake of accuracy, a small match head tick on crown. Most people would call this mint for an insulator that is likely 130+ years old. Price $30.00 plus shipping.