CD 731 [010] Brookfield threadless embossed with the Cauvet patent for the internal screw thread.

Embossed: (F-Crown) CAUVET'S / PAT / JULY 25, 1865 {MLOD} (F-Skirt) W. BROOKFIELD / 55 FULTON ST N. Y. (R-Skirt) 6. {MLOD}