While running a bottle through the key questions, the user is frequently directed to move to other website pages to explain diagnostic features and concepts as well as to add depth and/or precision to the initial dating estimate.
Please be aware that in order to gain the maximum information about any particular bottle (e.g., dating, typing) the user must usually must review a number of pages within this website.
As Berge (1980) noted in referring to bottles, the "..of manufacture of glass containers provides observable attributes which seem to be very useful in a classification of these artifacts." Thus, this page.
This bottle dating "key" is a relatively simple "first cut" on the dating of a bottle.
This, and no mold seams, is another indication of a hand-blown bottle.
A pontil rod held the nearly molten bottle during the final stages of manufacture.
-There are molded (embossed) "swirls" on the shoulder and upper body of the bottle.If a user needs to refresh themselves on the terminology used to describe the various parts of the bottle, click on Bottle Morphology to view a pop-up page of physical bottle feature definitions.Once the likely bottle age or date range is determined, some examples of other places to look for more information is provided.: -It is about 9" (23 cm) in height and 2 3/8th inches (6 cm) in diameter.The scar was left when the pontil was detached from the bottle. If the seams disappear in the neck, the bottle was probably "blown-in-mold" and dates circa 1820 to early 1900s.Is a pontil mark present along with disappearing side mold seams? Do the mold seams disappear in the neck, but the bottle lacks a pontil mark?