Glass coke bottle dating, date your glass soft drink & beer bottles
Click here to go to the main Glass Bottle Marks page.
If unsure about what embossing or vertical side mold seams picture below are, click on Bottle Morphology to see this sub-page for a illustration and explanation of these and many other key bottle related physical features.
Because they were not allowed to put them in bottles with the "Coca-Cola" script, the bottlers developed their own "flavor bottles. For example, some bottle types which were intended to be kept indefinitely like the early 20th century barber bottle pictured to the right were produced with the use of pontil rods leaving telltale pontil scars on bottles into at least the early 20th century.
Another exception example is that the bottles for expensive, low production liquors e. Today, John says he buys bottles mostly at different Coca-Cola glass coke bottle dating conventions, through auctions or from other collectors.
Produced during the era where all bottles were an relatively rare and cherished commodity to be discarded only when broken i. Before jumping into the key, it must again be textos didacticos yahoo dating that no single key can get a user to an absolutely precise date for any bottle.
This website is designed to have the informational depth, pictures, and illustrations necessary to solve the problems of the Newman key though his warning still holds though hopefully less so.
Finds like this add to the mystery and excitement of collecting. This page guides a user through the key for seven different type and age bottles with several being side-by-side comparisons of very similar bottles of different eras.
Other diagnostic tools must be used to date these items. This mark was reported on the heel of a hobbleskirt style Coca-Cola bottle, although this picture shows it on a Clorox bottle.
Owens-Illinois Glass Company
Blown-in-mold bottles without pontil marks date circa s to s. These bottles are discussed glass coke bottle dating more detail in the ink bottle section of the Household Bottles non-food related typology page. Most of the pics show the first and most widely recognized mark used beginning in Asymmetry is an indication of a hand-blown bottle.
The photo shows the various shades of amber that occur naturally, with the repro in the middle: All from Jackson TN amber and aqua.
To the authors knowledge, the first and only serious attempt at using a key to date American bottles was done in a Historical Archaeology journal article entitled A Dating Key For Post-Eighteenth Century Bottles by T.
Glass Manufacturers’ Marks on Coke Bottles
A bottle may have mold seams but no embossing, but all embossed bottles were molded and have mold seams even if they are not readily apparent. The older Coke bottles had manganese that will turn the bottle dark purple when irradiated. The first hobbleskirts where patened Nov 16, and came in a variety of colors: The glass turns purple when exposed to UV light.
Is the base indented with an irregular to round pontil scar? This termination of the side mold seam within the finish short of the rim Sheaffers ink or actually short of the finish itself green ink on these bottles makes it appear upon casual glance that these are mouth-blown bottles having either an improved tooled finish Sheaffers or an applied finish green ink.
For example, glassblowers still make hand-blown bottles today. This is another indication of a machine-made bottle.
Bottles with a purplish or amethyst hue are made from manganese dioxide glass and date circa to This can be due to one or a combination of factors including post-molding hot glass "flow" masking the mold seams, fire polishing of the bottle body, or atypically good mold fitting precision.
The same bottle could have been recycled and reused many times for many years before finally being discarded - entire or broken Busch Dec 25 patent and later all have a green tint color.
Coca-Cola Collectibles: Bottles : The Coca-Cola Company
This exception to the side mold seam "rule" was caused by the specific workings of these machines which masked the upper portion of the side mold seam. If you know your bottle is machine-made click Machine-Made Bottles to move directly to that page. Pursue these links freely since they will take a user to more details on bottle dating and identification and hopefully add to the users knowledge and understanding about the bottle being "keying out".
Easiest way to spot a repro is by looking at the base of the bottle. 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.
These bottles date after Hobbleskirt Coke By Cokes started being produced in the familiar hobble-skirt shape which is still used today.
This was almost universal with many beverage bottle types e. One ad shows the baseball played Eddie Collins. Instead ,there is also one located near the base of the neck indicating that the neck ring mold portion of the parison mold produced the finish, neck, and a portion of the shoulder.
The closer to the top of the bottle the seams extend, the more recent was the production of the bottle. Bottles with suction scars were made in an Owens Automatic Bottle Machine and date after By the midth century, embossed lettering and marking on bottle bodies and bases, denoting manufacturers and products, made more precise dating possible.
Many identical shapes persisted through time and others were brought back for nostalgia and made common again.
This will be noted where known. Most bottles with embossed lettering date from the late 19th century and later.
Timeline: The Evolution of the Coca-Cola Bottle: The Coca-Cola Company
He still goes to flea markets and yard sales, although the competition for valuable items has picked up dramatically in recent years. To open the bottle, the consumer punched down on a metal loop in the stopper, which broke the seal and made a popping sound.
D " called the "D-Patent Cokes" were produced from to