- by Malarg
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I am here to clarify a bit of the mystery. Usually, the symbols are a logo for a company, and the numbers a code for where and when the particular glass item was produced. Each glass making company has their own method of labeling their products. With this hub, I am going to focus on the methods used by the Owens-Illinois O-I Company, and show you how to date your glass finds using the symbols and numbers indicative of the O-I company. I am by no means an expert on the numbers, nor am I an expert on how to date glass using the numbers, but I have done a lot of research on the subject, and I am relaying the information I have acquired along my internet travels. What first led me down this path of discovery was a small piece of glass I found washed up on my local creek with the word Duraglas embossed on it Exhibit A.
Possibly the company thought more of its products because every bottle was marked with a factory and date number on the bottom. Michael Owens learned glass making in Wheeling.
He subsequently invented a series of bottle making machines which his company sold to other bottle makers, besides using them in their own factories. By the s one machine could make bottles per hour! The company had four other factories: 1 in Toledo, 2 in Huntington, 3 in Fairmont and 4 in Clarksburg, When they merged with Illinois Glass Company in they added 13 more factories to the empire and built 16 more in succeeding years.
The factory numbers did not change after the merger. After the diamond was omitted. The factory number was on the left and the date number was on the right.
Our first example to the right Exhibit Dfortunately for me, is extremely easy to determine the date of production. Since has yet to pass, and the company did not exist in nor did it use that symbol prior to the 's, the only possible year of production is However, this next piece of glass is not so easy. I am unsure of whether or not this particular example follows the general trend of date code to the right of the symbol. That 7 placed there could literally mean anything.
If we assume that the 7 is indicative of a year, it could mean anything from to The plant code is of no use either to help narrow down the date.
The number 17 is for a plant in Clarion, Pennsylvania which has been in operation since and is still presently producing bottles.
Dating owens illinois bottles
However, the A to the right of the 7 tells me that this piece of glass has a high probability of either once being a Coca-Cola bottle or a Pepsi-Cola bottle. If that is the case, this piece of glass may be our exception to the rule and the 7 to the right of the symbol may not be a year code at all.
Coca-Cola and Pepsi-Cola didn't always adhere to the Owens-Illinois policies, and often had their dates on the heel, and not the bottom, of the glass. Society for Historical Archaeology However, what we do know is that Pepsi and Coke now come in plastic bottles or aluminum cans. They started the switch to plastic in the 60's and 70's. That narrows down the date from to if the 7 is indeed a year code.
By comparing it to the glass, Exhibit E is more weathered.
Owens-Illinois Glass Company bottle manufacturers marks glass containers Base codes on Owens-Illinois amber glass handled jug, ( or date code . discovered was a more refined way to date. Owens-Illinois bottles from the period with information provided by their marks. While I was looking, I. If you are an avid beach or sea glass collector, or glass bottle collector, this is a tutorial on how to date glass made by the Owens-Illinois.
It is frostier and more scratched and appears to have been in the water longer than Exhibit D. This leads me to believe that the 7 stands for However, that is simply my best guess and not a certainty. I know this was a long post, but I hoped you have all learned as much as I have. My sources are listed below, feel free to check them out yourself for more information on the subject. Society of Historical Archaeology, Wikimedia Foundation, 22 Oct.
Sign in or sign up and post using a HubPages Network account. Comments are not for promoting your articles or other sites. I have a 4 inch tall brown jar with a 2 inch diameter and A 1.
How to Date Owens-Illinois Glass
A single dot 6 just to the right. I think it is made in and it was a glue jar or an ink jar. Am I close? I have an amber colored flask shaped glass bottle.
On the bottom it has 72, an N with an oval around it, D, and ends with the number 53 at bottom center.
I can't find which number is the year of manufacture. It's certainly much too old to be from So, it must be or What do you think? I found a glass jar with an "I" in an oval, factory code 10 and year code That doesn't make sense. A factory code 10 indicates that it was made in the 30s, but a 71 date code says it was made in What am I missing?
Owens-Illinois Glass Company
If the glass is from then the I may have faded away over time, especially if you found it in the ocean. In Exhibit C, you can just barely make out the I in the photo, so it might be the first part of the symbol to fade.
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 symbol. Are you sure the glass is from ?
From what I have researched, the company didn't start embossing glasses with the word 'Duraglas' until the s? I found your article very helpful.
Made at plant 3 in Not sure if there is a dot after the 4 as there are many dots in that area. However, the Duraglas inscription is quite clear but the diamond trade mark only appears to have a circle within and not an I. Other product and company names shown may be trademarks of their respective owners.
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History of the Owens-Illinois Glass Company If that was the end of it, this would be a pretty lame blog post, but as it stands I am a fairly curious person and couldn't help digging a little deeper. Sources 1: Lindsey, Bill.
Military History. Antique Collecting.
The Owens-Illinois Glass Company formed in and quickly grew The number to the right of the trademark is the date code; A single digit. Between 0 and c. 1 , Owens Bottle Company and Owens-Illinois Glass Company made millions of bottles and jars including familiar ones such as 7-Up . And finally, in , Brockway Glass took over Continental Can Co. Over the [1 ]. NOTES ON DATING A HAZEL-ATLAS BOTTLE OR JAR*.
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"Founded in as the Owens Bottle Company, Owens-Illinois' roots are directly the base marks of Owens bottles to help in dating a particular specimen . of bottle. By , Illinois Glass had obtained the first of three . Owens-Illinois date codes were always positioned to the right of the logo. On almost a weekly basis someone will come along and inquire about dating bottles, with many of the inquiries specifically related to.