Prolixin open bottle dating
There are several different type pontil marks, all of which are a mark or scar on the bottle base left by a type of pontil rod.
There is a lot variety possible within each category of pontil marks.
Typical examples of the 3 major pontil types - glass-tipped or "open" pontil scar, iron or "improved" pontil scar, and sand (disk) pontil scar - are pictured to the right.
Prolixin open bottle dating video
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If you are seeking information on what type bottle you have, go to the Bottle Typing & Diagnostic Shapes page which also will lead users to additional dating information.
have any evidence of a pontil mark though the base may have a mold line(s) and/or embossing, or be totally smooth and unmarked.
The primary features common to most mouth-blown bottles are addressed by Questions #4 through #7 which are listed below.
Click the question link to jump directly to that question Other datable diagnostic features and bottle type specific date ranges for the listed diagnostic features are discussed in more depth within other portions of this website.
Directly in front of the standing boy is most likely the marver - a flat table used for parison manipulation.
The caption to the photo is: "Blower and Mold Boy, Seneca Glass Works, Morgantown, W. Location: Morgantown, West Virginia."The large majority of mouth-blown bottles (probably at least 95%) date to or prior to the World War I era, i.e., ≤1915-1920, with at least 75% likely dating prior to 1900 (empirical estimate).
The mold boy would open and close the mold (at the base of the pipe behind the wash tub) as directed by the gaffer.
In front of the gaffer in this image (to his right) is the chair where much work was done with blowpipe manipulation prior to lowering the parison into the mold.
From Champagne to Bailey’s Irish Cream, here’s a consumer’s guide to how long your favorite bottles of alcohol will last once you pop the cork or break the seal.