Dating canadian glass bottles
Hopefully this database will be of some help to those who are attempting to assign an approximate date range to a particular bottle, assuming it carries an identifiable glass manufacturer’s mark. Co.” Also, the abbreviation “Co” (Company) sometimes may be found embossed with either an upper- or lower-case “O” on various bottles made by the same manufacturer.
be a glass manufacturer’s mark and so may not be listed here. Many bottles carry only a number (or numbers) on the base.
Even given these descriptions beginning often mistake a machine made Owen ring on the base of a bottle with a pontil.
(Specifics on what a pontil looks like or how to tell the age based on the mold seam can be found in Bottle Basics.) While these two characteristics are often a strong clue to age, readers will be further helped by developing an understanding how the various categories of bottles changed over time.
These diagrams should help clarify age differences based on both form and function.
Bill Lindsey discusses antique bottles, including mouth blown bottles, bitters, figurals, inks, medicines, flasks, and many other varieties.
He also explains the history and methods of early bottle production, and how diggers find bottles.
If you are not well versed in bottle terminology, use the Bottle Dating Wizard.
The Bottle Dating Wizard will guide you through the dating process in an easy to use way, based on your bottle's attributes or characteristics.