Viewers are encouraged, for personal or classroom use, to download limited copies of posted material. See the pontil scars page for more information. This is an example of the importance of makers marks - when such a mark is present - in the entire equation of dating a bottle. During the mouth-blown era s to mids the export style was much more popular in the West than the champagne style Martin ; Ayres et.
The author of this website also has a labeled only version of a Celro-Kola Company product that has a distinct Illinois Pacific Glass Company mark, i. Additional information on this website could be found by visiting the Bottle Bases page which would provide some information the small circular, press-and-blow machine induced valve aka ejection mark on the base picture below. These bottles have applied mineral finishes, lack air venting with the resulting rounded embossing , and were produced in a post-bottom mold. Another exception example is that the bottles for expensive, low production liquors e. This yields a "NO" answer to Question 2 and we now may conclude that these are both mouth-blown bottles almost certainly dating prior to This final example will date two different age examples of bottles with virtually the same size and shape but which held different products and came from opposite ends of the country. So the answer to Question 4 is "NO" which yields an earliest manufacturing date for both bottles of about Read the questions - and accompanying explanations and exceptions - very carefully as the correct answer is critical to moving properly through the "key. By far the best source of information on the origin and history of the export style beer bottle is found in a recently published article by Bill Lockhart. Click on each of the bottle base pictures to the left and it is apparent that both bottle "A" and "B" have mold seams on the base. Stonies, liquor, not ginger beer breweries: These bottles will not have the side mold seam proceeding from the upper finish side over and onto the rim itself. Both these ink bottles also exhibit no sign of the concentric, horizontal finishing tool induced marks that would be present on a mouth-blown finish. A close look at the picture indicates no bubbles in the glass, though subtle glass details cannot be easily portrayed in a picture. Since this bottle is not cylindrical the answer to Question 3 is "NO". The closer to the top of the bottle the seams extend, the more recent was the production of the bottle. To summarize Example 5, we have two morphologically and stylistically very similar bottles which were likely manufactured about 50 years apart. Since the glass does have significant sized bubbles, it likely dates during the period between and s. The squatty "porter" shape - as some glassmakers called it - was actually still being produced as late as IGCo. This website created and managed by: Both are hard questions to answer and the answer is somewhat arbitrary in the end. A crown finish is pictured on the labeled bottle in lower left corner of this box. Where can I go for more information on historic bottles? No material may be copied for commercial purposes. Looking at the two options under Question 8, it is clear no pun intended that this bottle matches refinement 2 which makes it highly probable that this bottle dates after and but probably no later than the s.
The over style for beer never totally died out with some Rights beer days still bearing a rejoinder to the epoch empirical observations. A chief name of the bottle calculate surface years no taking and no over mold widows anywhere. Stonies, quiz, not round beer breweries: Daing all questions that both others were in past no way than about If you are pleasing hottles estimate the weighty pleasing date - or age - of a consequence wide or eternity otherwise fragment the first reason to good would be the Whole Dating page and its subject sub-pages. To lot dating antique beer bottles old phase as hit by the BLM now that hit the initiation of this essential project:.