Illinois dating lines

(Thanks to Ken Rudd for submitting this photo)." src="https:// alt="Base photo of amber Dad's Root Beer bottle, carrying the "old" Owens-Illinois mark, but with an unusually late 1960 date code! " width="300" height="258" srcset="https:// https:// https:// sizes="(max-width: 300px) 100vw, 300px" / The mark “O-I” has also been in use for some time in very recent years (but I’m not sure when it first appeared on containers).The “O-I” mark shown on this page is on the heel of an emerald green ALE81 soda bottle made in 2011.many of the liquor flasks made by Owens-Illinois have the “Diamond and Oval with an I” logo embossed sideways on the base of the container.

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For a page with some of the principal plant code numbers used on bottles, courtesy of Dick Cole (fruitjar.org), click here .

(That list is several decades old and does not cover all of the recently started plants).

There was a gradual changeover from the “old” to the “new” trademark on containers which occurred over a period of four or five years beginning in 1954 (with a few known exceptions—see note below discussing a bottle made in 1966 with the “old” trademark).

Some bottle molds already in use were not re-engraved until as late as 1957, 1958, 1959, even, as mentioned, in 1966. “OWENS” appears on the base of some clear prescription bottles.

For more detailed discussion on Owens-Illinois Glass Company and the date codes, plant location and mold codes used, check out this comprehensive article written by Bill Lockhart and Russ Hoenig: The Bewildering Array of Owens-Illinois Glass Co. Click here for one of many pages from O-I’s official website.

To return to the main Glass Bottle Marks page, please click here. Please check out my summary page on Sea Glass / Beach Glass.Base of Yacht Club Beverages ACL soda bottle, bearing 1966 date code along with older mark.(Photo courtesy of Taylor Mc Burney) " data-medium-file="https:// data-large-file="https:// class="wp-image-1921 size-large" title="Base of Yacht Club Beverages ACL soda bottle, bearing 1966 date code along with older mark.On many bottles, a single-digit date code along with the diamond/oval/I mark may indicate the 1930s.From information compiled in Bill Lockhart’s article (link below) on Owens-Illinois’ date code markings, it appears that, on containers with this earliest trademark, if a single digit date code (such as “O” or “1” placed to the right of the logo) the chances are very good the bottle in question dates from the 1940s, especially the 1940-1947 period.Many millions of insulators were made at Muncie, up to 1967.

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