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This bottle is an Owens-Illinois Glass Company produced beer bottle made in 1941 by the Oakland, CA. If you are attempting to estimate the approximate manufacturing date - or age - of a particular bottle (or significant sized fragment) the first page to visit would be the Bottle Dating page and its related sub-pages.
These pages lead a user through a series of questions about the physical - or morphological - characteristics of historic bottles which help to narrow down the age of an item.
However, some Canadian-made bottles mirrored English manufacturing techniques/timeframes and many English stylistic trends (particularly for liquor, soda, and beer bottles) which differed somewhat from typical U. items - though many Canadian bottles also mirrored U.
Both the DOT and the EPA advise that although a nonconforming car may be conditionally admitted, the modification required to bring it into compliance may be so extensive and costly for vehicles that were not originally manufactured for the U. Importation of a passenger car, truck, trailer, motorcycle, bus, or multi-purpose passenger vehicle (MPV) that was not originally manufactured to comply with U. Vehicles (other than motorcycles) manufactured to comply with the FMVSS will have a certification label affixed by the original manufacturer in the area of the driver-side door.
When possible, the information on this website is given general reliability rating estimates (e.g., high, moderate, low or "usually", "occasionally", "almost always", "almost never") to allow a user some "feel" for the probable accuracy of their conclusion or determination.
In addition, there are a hundreds of dating and/or typing determination examples scattered throughout virtually every site page to give the user a feel for the processes involved in dating and/or typing a bottle.
We have tried to define the distinction between these two classes of bottles from the perspective of the intent of and information found on this website.: This website was prepared based primarily on information about bottle manufacturing technologies, processes, and styles specific to the United States. Viewers are encouraged, for personal or classroom use, to download limited copies of posted material. Author reserves the right to update this information as appropriate.
Empirical observations indicate that Canadian-made bottles very often followed similar glassmaking technique and process chronologies making much of the information applicable to Canadian made bottles. If using this site for the dating or typing of a known or likely Canadian-made bottle, keep this in mind as the reliability of the information may be reduced.
In part, this book fulfills this authors long time desire to have a hard copy "field guide" version of this website for use by archaeologists (and others) by having at least the dating portions available in printed form to take to the field.It does not attempt to address the dating of "specialty" or imported bottles made during that time, though much of the information found on this website is pertinent to these items to varying degrees. For this website the distinction between the two categories is related to the varying time frames that different glass making techniques were used for for the two classes of bottles.Click on to view the portion of the Glossary Page that covers these subjects.Beyond that the book includes more information about historic bottle identification (typology), bottle production, and more than can be summarized here.The book is available at com - search for "Baffle Marks and Pontil Scars." The book is available softbound with either black and white or full color images. made in the United States from the late 18th through mid-20th centuries. Both are hard questions to answer and the answer is somewhat arbitrary in the end.