Dating antique soda bottles, date your glass soft drink & beer bottles
This section of the dating key is a series of independent questions where the answer to any given question is not dependent on the answer to another; a user may view the questions in any order. A close look at the picture indicates no bubbles in the glass, though subtle glass details cannot be easily portrayed in a picture.
For brevity, most of the specific references are not noted in the key's narratives. In short, there was and is nothing to stop a glassmaker from using an obsolete method in the production of a bottle.
Return back to this page by closing the Bottle Morphology page.
I have a Coke bottle with the mark which is date coded for the year This is a "machine-made" bottle or jar and will also usually have a highly diagnostic horizontal mold seam just below the finish that circles the neck. The closer to the top of the bottle the seams extend, the more recent was the production of the bottle.
The two latter works would provide some general information on milk bottles that would be pertinent though not specific to this Nevada example.
It also has no neck ring mold seam immediately below the finish like found on most Owens machine produced bottles or on the majority of all machine-made bottles.
The lack of air venting does not help with the dating refinement of bottle "A" so we actually reached the end of dating for "A" with Question 6.
The proximity of the company to Oregon would make it a likely source. The user is now directed under all of the Question 5 options to move to Question 6which deals with diagnostic base features.
Under the "YES" answer for Question 6 there is more dating refinement possible based on the type or orientation of mold seams on the base, as follows: See the About This Site page for more information about the author and contributors.
Unfortunately, the complexities of precisely dating bottles is beyond the scope of any simple key. Viewers are encouraged, for personal or classroom use, to download limited copies of posted material.
This technology lag makes some diagnostic characteristics better than others for dating. Specialty bottles include a significant number of bottles in the following categories: A pdf copy of Newman's article is available now courtesy of the SHA by clicking on this link: Click on the picture above to see more distinctly where the side mold seams end on the two bottles.
Glass Manufacturers' Marks on Coke Bottles
Although there are examples of bottles having mold seams that fit these date ranges Dating antique soda bottles, the issue of dating bottles is vastly more complicated than the simple reading of side mold seams.
However, these bottles lack other mouth-blown characteristics and have one feature that is only found on machine-made bottles made by a press-and-blow machine - a valve or ejection mark on the base. The bottles used for illustration are a small but diverse assortment designed to give users guidance on how to work a bottle through the dating information to answer the Homepage's primary question 1 - What is the age of the bottle?
The image shows the vertical side mold seam ending on the outside edge of the bead finish at a "ring" mold the upper portion of a parison or "blank" mold induced horizontal mold seam that encircles the extreme outer edge of the finish.
DETERMINING THE AGE OF OLD BOTTLES
For the first time user of this site it is highly recommended that the following information be read prior to using the key below. The best the following key can do is get a user to a reliably close dating range estimate. These bottles will, however, have the vertical side mold seam progressing all the way to the very top of the finish side, just not onto the rim.
In hand, the bottle does not have any bubbles in the glass. The makers mark cinches the date in the s of course, but without this marking the bottle date could not be refined further.
Click Dating antique soda bottles to go to the main Glass Bottle Marks page. A "NO" answer is much less likely than "YES" for this question as a very large majority of bottles made during the 19th century and virtually all made during the first half of the 20th century were mold blown resulting in mold seams; see the note below.