Dating american 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.
Only bottles from the Canada and the United States are currently supported and dating ends at 1920.
This page and associated sub-pages allows a user to run an American produced utilitarian bottle or a significantly sized bottle fragment through a series of questions based primarily on diagnostic physical, manufacturing related characteristics or features to determine the approximate manufacturing age range of the item.
This technology lag makes some diagnostic characteristics better than others for dating. As a corollary to #1, consider the following quote: "Treat terminal dates with care.
Other diagnostic tools must be used to date these items.Some technological changes were expensive and not adopted by glass makers until it became an "adapt or perish" issue and many glass factories just perished.The shift to the fully automated bottle machine from mouth-blown and some semi-automatic methods in the early 20th century is the classic example (Toulouse 1967, 1969a). The same bottle could have been recycled and reused many times for many years before finally being discarded - entire or broken (Busch 1987).It is unlikely that this bottle was made during the same era, but instead was reused for a lengthy period or otherwise retained until broken or discarded.
Pontiled base fragments could also be from later produced "specialty" bottles which are described below.5.
For experienced users, you may choose one of two different single page dating engines, for either glass or pottery bottles.