Pictured is a beer bottle made at the Owens-Illinois Glass Co. plant in Oakland, CA. in Bottles with the highlighted mark in the image date between and the mids (with some limited use of this mark until at least ). Plastic caps for external threaded finishes: an excellent bottle dating . May 14, · Also, Pepsi and Cola were known for not exactly following the Owens-Illinois companies rules and standards when it came to dating and stamping their glass bottles. For example, instead of a date code on the bottom of the bottle, Pepsi and Cola often printed their date on the side of the bottle, so they could have left the I out of the cybertime.rus: 5.
Forum Guidelines for Determining the Age of Ownes Bottles Estimating the age of antique bottles can elternabend kennenlernen kindergarten be a difficult task even for the experienced collector. However, by following some basic guidelines anyone can owens illinois bottle dating approximate age. Although this brief article is primarily intended for American-made bottles, glass from other countries has evolved similarly. This outline covers basic patterns but note owens illinois bottle dating there are exceptions to every rule. Mold Seam Most bottles produced in the past years were formed dqting blowing molten glass into a mold. Molds were made of iron or wood and consist of 2 or 3 pieces.
This company was prolific in its production of reproduction and other antique-looking bottles and glass which they produced in the mid 20th century to the present. Owens bottle ring- During the period of to , Micheal Owens developed automated methods for opening and closing bottle molds which led to mass production of glass and bottles. A distinctive characteristic of wares made by this method is a thin embossed circle on the base of the bottle, usually found with numbers and other marks indicating year of manufacture, mold number, etc.
Bottles with such markings date from approximately to Other Guidelines Specific embossing found on bottles can be an immediate indication of age. An entire book called Bottle Makers and Their Marks by Toulouse documents the hundreds of markings made by glass manufacturers.
There are a lot of reproduction bottles out there, and new ones that look old are made every day. Modern bottles are sometimes intentionally made to look old and mimic the shape, surface texture and overall appearance of hand blown glass. Be wary of bottles that have dates on them such as or others prior to , since dated bottles prior to this time are rare. Bold and garish colors are also rare in antique bottles, so beware of bright reds, greens, yellows and purples.
If it looks too good to be true, it probably is! There are huge numbers of bubbles and impurities in the glass. The glass itself is commonly thick, heavy and distorted in shape. Early glassmakers tried their best to make uniform, quality wares; modern makers try hard to make their bottles look handblown.
Mouth of Bottle Perhaps the most obvious key to age is the mouth of the bottle. As a general rule, screw top bottles except canning jars were made after or so.
Cork top bottles generally vanished at the turn of this century. Look closely at the mold seam and where the lip meets the bottle. All truely hand blown bottles have an applied lip. The curious student of glass items will quickly learn when a lip has been formed onto the bottle and when it was applied by hand. Handwork in glassblowing disappeared in the late 19th century. It is a safe rule that after , few, if any, bottles were mass-produced with an applied lip.
Examine as many old bottles as you can and ask lots of questions. You will find that you can quickly train your eye to know a lot about the age of most bottles that you will find. Got A Question about Your Bottle? Found a brown bottle about four inches tall in pomona ny while working on the mtn no markings but on bottom the number 7 then what looks like a celtic symbol or saturn and then the num 6 its filled with dirt was partially in the ground at the neck thers one seam another above it but bigger top of bottle flat withtiny tiny seam again?
October 27, at 9: Post a photo of bottle on the antique bottle forum — would also be great to have a rubbing of the bottom showing embossing. Fascinating information all! This particular catalog was used by a firm in Durango, Mexico as it was date stamped upon receipt?
Of not, it contains many pages of liquor bottles which would have had a very limited market in the U. It appears that new editions of IGCo. A complete copy of that catalog is also found on this website! For a complete history of the Illinois Glass Company consult the following reference; a pdf copy of this article is included on this website: The Dating Game: The Illinois Glass Company.
Bottles and Extras 16 1: This article available on this site at: All of the pages in the IGCo. Click on each link to view an enlarged and moderate quality scan of each individual page jpeg files.