Bring it to Dr. Since bottles can be very valuable and collectible, knowing the approximate age of a bottle can help you sell them for top dollar. It happens. The base of a glass bottle will tell you a lot about its age. In the middle of the s, a snap tool was invented which let a glass blower or gaffer hold a glass bottle without a rod. This tool eliminated the sharp pontil mark the broken end of the glass rod at the base of a bottle.
Look for mold seams. The earliest bottles were hand-blown by a glassblower with a blowpipe and lack seams. Is the bottle highly symmetrical, but lacking mold seams? This type of bottle was probably dip-molded and dates after circa Is the base indented with an irregular to round pontil scar? 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.
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The scar was left when the pontil was detached from the bottle. Look for side mold seams. If the seams disappear in the neck, the bottle was probably "blown-in-mold" and dates circa to early s.
Is a pontil mark present along with disappearing side mold seams?
Dating old beer bottles
This bottle probably dates circa to Do the mold seams disappear in the neck, but the bottle lacks a pontil mark? Blown-in-mold bottles without pontil marks date circa s to s.
Do the mold seams go all the way from the base to the lip? This is a machine-made bottle and dates after Look for a "suction" scar on the base.
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This will be shallower, wider and more perfectly circular than a pontil mark. Bottles with suction scars were made in an Owens Automatic Bottle Machine and date after The Owens machine revolutionized the bottle industry. Check for lack of bubbles and uniform glass thickness. This is another indication of a machine-made bottle. Is embossed lettering present? Most bottles with embossed lettering date from the late 19th century and later.
Lettering on the body will give clues to the contents and lettering on the base will give clues to the manufacturer.
Both require more specific research to refine the bottle's date beyond observation of technology. The bottle top or lip of a bottle comes in many forms.
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There are cork tops, screw tops, crown tops, etc. Common since the 18th Century, corks led the market because corks could be impressed into the top of a bottle and seal it no matter the form of the bottle.
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Screw tops were invented in the early s, but not standardized so they would not come into their own until the era of machine-made bottles in the s. Crown tops were a Victorian innovation, circa s.
They also did not come into widespread use until the era of machine-made bottles in the s.
Prior to this action, beer bottles often featured a bottling credit on them in addition to the name of the brewer, which is one way to date a beer bottle. While early beer bottles came in a variety of glass colors, including brown, blue, green, and clear, the first American bottles were made from ceramic stoneware. some of bottles. Estimating the antique glass company produced beer. On them, it sounds like an angry evaluation can only be bad in the s. Apr 12, Cobalt blue is a color often used in these types of bottles, dating from the s through the s. Many poison bottles from the late s through the early s feature a quilted or spiked pattern and, sometimes, included the word "poison.".
Look for these old bottles with the characteristic crown top. Marks or letters on collectible milk bottles and Coca Cola bottles are commonly indicators of age and origin.
Get an online appraisal report of your old bottle from Dr. This service is provided as an information and advice resource.
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A key concept in historic bottle dating is the high probability (i.e., high likelihood) that the age range noted for a particular diagnostic characteristic is accurate for a given bottle . Morphy Auctions. Many different types of bottles are highly collectible and can be worth a tidy sum, including old beer bottles. One factor that drives up the price is that bottle collectors in general, collectors of breweriana, and those interested in old advertising memorabilia all compete for these items. This auction lot consisted of two early Conrad Budweiser embossed beer bottles. Apr 12, Dating antique bottles requires knowledge of the evolution of bottle technology and the ability to research manufacturers and bottling companies. Although glass bottles have been made for a few thousand years, it was not until the 19th century that bottle use became common, coinciding with the industrial revolution.
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Circa , key molds were used on bottles which looked like a semi-circle on a bottles base. Later, about , cup mold bases were used and they were smooth with no marks; sometimes on old bottles and flasks, too. Possibly the most common type of bottle base is the push-up base. 26 rows OLD BOTTLE IDENTIFICATION AND DATING GUIDE. This webpage is intended to help . information on the dating of typical "utilitarian" bottles and jars made in the United States from the late 18th through midth centuries. It does not attempt to fully address the dating of "specialty" or imported bottles made during that time.
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