Table of contents. Click here to move directly to the list of machine-made dating questions. Machine-made bottles will exhibit most or all of the diagnostic characteristics explained and illustrated below. It should be noted that features 1, 3, 4, 5, and 6 are primary indicators of machine-made manufacture.
Owens illinois bottle dating – 30 Day Transformation Team
Duraglas in a cursive script with only the first letter actually capitalized was registered by Owens-Illinois Glass Company, based in Toledo, Ohio at that time, on September 23, The official registration number was This is or was one of the most commonly-seen trademarks in the history of the United States. The name appears often on either the base or the heel of the container. This webpage is currently under construction.
By Amanda Slater originally posted to Flickr as Lots of bottles! 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.
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