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https://sha.org/bottle/dating.htmThe concept is that the higher the side mold seam on the bottle the later it was made - at least in the era from the early to mid 19th century until the first few decades of the 20th century. This dating tool was apparently devised by Grace Kendrick in her 1963 book "The Antique Bottle Collector."
https://sha.org/bottle/examples.htmSmall picture of a group of bottle dating between 1840 and 1930. ... The example
bottles are tracked though the Bottle Dating page questions in that pages ..... The
Bottle Book (Fike 1987); and Antique Western Bitters Bottles (Wichmann 1999).
www.antiquemedicines.com/bottletypes/bottletypes.htmblack glass or dark amber, 1720s - 1800s. sheared top with applied lip wine,
1740s - 1800s. sheared top tooled common to snuff bottles and food bottles,
antiquecannabisbook.com/chap4/Mold_A.htmTHE SEAM METHOD - OF DATING OF GLASS BOTTLES. Bottle 1840 - 1860*
Seam verily goes over the shoulder, Bottle 1860 - 1880. Seam rises onto the
ourpastimes.com/date-antique-glass-bottles-5760378.htmlDating antique bottles requires knowledge of the evolution of bottle technology
and the ability to research manufacturers and bottling companies. Although glass
www.antiquebottles.com/dating.htmlDating Antique Bottles. Many people are intrigued to know how old their bottle is.
There are three keys to help with dating most bottles: Side seams: None: bottle ...
www.fire.ca.gov/resource_mgt/archaeology/downloads/Bottles.pdfBottles. There are four important characteristics for dating bottles: ... Before the
modern bottle-making machine, bottles were blown – first free-blown, and then.