Dating an antique bottle
On earlier flasks, fruit jars, and soda bottles, and especially examples produced in the mid-nineteenth century period (1840s-1860s), the full factory name or initials may be embossed across the front.
This list primarily includes marks that represent the actual glass company that made the container.
Screw tops were invented in the early 1800s, but not standardized so they would not come into their own until the era of machine-made bottles in the 1900s.
Crown tops were a Victorian innovation, circa 1890s.
In the middle of the 1800s, a snap tool was invented which let a glass blower or gaffer hold a glass bottle without a rod.Old liquor, spirits, medicine and bitters bottles all had various types of bases.Circa 1855-1875, key molds were used on bottles which looked like a semi-circle on a bottles base.Later, about 1900, cup mold bases were used and they were smooth with no marks; sometimes on old bottles and flasks, too.Possibly the most common type of bottle base is the push-up base.
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