Age dating ball perfect mason jars

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These variations in punctuation were common and probably reflected the whim of the mold engraver, thus having little or no importance (i.e. Some numbers served as date codes, or as some other type of internal code used by the factory.

for assigning date ranges) especially on marks of pre-1900 bottles. In the great majority of cases, bottles with only numbers on the base are difficult, if not impossible, to attribute to a specific glass maker.

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.

For the most part, I have not attempted to list fine distinctions for marks that are found both with and without periods. See my webpage here with more info on numbers seen on bottles.

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Also, only a small percentage of comments received are actually published on this site, since if every one was answered and published, my site would soon be loaded down with hundreds of comments that could possibly cause the pages to begin to load more slowly for those with slower or older computers, and/or dialup connections.

Researcher/historian Tod Von Mechow has compiled a large quantity of in-depth information on antique beer bottles, including both pottery and glass bottles.

I would encourage anyone interested in makers’ marks on beer bottles (and soda bottles) to check out his site…..

This list primarily includes marks that represent the actual glass company that made the container.

Many marks are encountered that indicate the company whose product was contained within it, or are trademarks (“brand names”) that give no indication of who actually made the glass, and those are (with quite a few exceptions) , not included in my list.

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