04/11/2026
This stunning chemists bottle from around 1890-1910 is made of uranium glass. The stopper is acid-etched for a tight seal without needing cork. The base has a polished pontil mark.
A pontil (or punty) is a metal rod used in traditional glassblowing to hold or shape molten glass. After the glass is blown and shaped, the pontil is attached to the base of the piece to allow the glassblower to work on the top or neck. When the piece is finished and detached from the pontil, it often leaves a mark called a "pontil mark" or "pontil scar," which can help identify hand-blown glass.
Uranium glass is a decorative glass containing uranium oxide.
Popular in the 19th and early 20th centuries, it is mildly radioactive but safe to handle.
The label, stating "CHLOROFORM" is hand painted in enamel. Chloroform is a sweet-smelling liquid once used as an anesthetic but abandoned due to its toxicity and safer alternatives 🇬🇧