Dating old milk bottles | Stoneys Rockin Country
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Must be done just how old beer? On your bottle's attributes of a collection. This bottle probably dates circa to This website is intended for Is embossed lettering present? Stell Newman Newman All the bottles are authenticated, and the descriptions include all important identifying information. No material may be copied for commercial purposes. Is there a 2 digit date on the bottom? Pontiled base fragments could also be from later produced "specialty" bottles which are described below.
Ebay is a good place to see what all kinds of bottles have sold for by online auction by searching their completed auctions. However, all used milk bottles will show some scratches.
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. These came in various single colors, including red, blue, and black. A bottle may have mold seams but no embossing, but all embossed bottles were molded and have mold seams even if they are not readily apparent. This bottle is either free-blown"dip" moldedor was produced in a "turn-mold" aka "paste-mold" where the side mold seam is erased during manufacturing.
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.
A low probability though possible "NO" alternative is that the user has an unembossed, molded bottle with no visible vertical side mold seams. This can be due to one or a combination of factors including post-molding hot glass "flow" masking the mold seams, fire polishing of the bottle body, or atypically good mold fitting precision.
If necessary, look very closely at the bottle shoulder - the best location to see vertical side seams on mouth-blown and most machine-made bottles - in good light with a hand lens to see if there is at least some faint evidence of where the mold edges came together.
Often the vertical side mold seams are evidenced by very faint changes in glass density in lines where one would expect mold seams to be. Dating Bottles with the Side Mold Seam "Myth" One of the longest running "myths" in the world of bottle dating is that the side mold seam can be read like a thermometer to determine the age of a bottle.
The concept is that the higher the side mold seam on the bottle the later it was made - at least in the era from the early to mid 19th century until the first few decades of the 20th century.
Mold Seams of Bottles" chart Figure 9. Kendrick's explains in the text pages that It is true that the mold seams can be used like a thermometer to determine the approximate age of a bottle. The closer to the top of the bottle the seams extend, the more recent was the production of the bottle.
Numbers on the bottoms of glass bottles
The chart accompanying this statement notes that bottles made before have a side mold seam ending on the shoulder or low on the neck, between and the seam ends just below the finish, between and the seam ends within the finish just below the finish rim top lip surfaceand those made after have mold seams ending right at the top surface of the finish, i. Although there are examples of bottles having mold seams that fit these date ranges properly, the issue of dating bottles is vastly more complicated than the simple reading of side mold seams.
- Dating old milk bottles
- Numbers on the bottoms of glass bottles and jars
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If it were that simple much of this website would be unnecessary! For example, the process that produces a tooled finish frequently erases traces of the side mold seam an inch or more below the base of the finish whereas the typical applied finish has the seam ending higher - right at the base of the finish Lockhart et.
The reason this is noted here is that the concept keeps popping up in the literature of bottle dating and identification ranging from Sellari's books Sellari For a broader discussion of this subject see Lockhart, et al. If unsure about what the lip, rim, or finish of a bottle is, check the Bottle Morphology sub-page.
If you need more information on this diagnostic feature - including various images - click the following link: 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 picture to the left shows both of these mold seams click to enlarge. If your bottle fits this description, click Machine-made Bottles to move to the related webpage which allows the user to pursue more information on bottles produced almost totally in the 20th century by some type of automatic or semi-automatic bottle machine. The vast majority of U. If your bottle has a ground rim or lip, more information can be found at the following link: Fire Polishing - Occasionally encountered machine-made bottles may have fire polished finish rims - a process which eradicated evidence of the neck-ring mold seam on the rim of the bottle.
These bottles will not have the side mold seam proceeding from the upper finish side over and onto the rim itself.
Ostensibly this was done to remove the mold seam "bump" that was sometimes left by earlier machines - an action which may have helped facilitate better sealing with crown caps, screw-thread caps, or similar closures which sealed on the rim of the finish. 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.
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They will also have other machine-made characteristics as described on the Machine-made Bottles page. In the experience of the website author, these machine-made bottles are rarely encountered and likely a function of early machine-made wares to s that had less precise mold fitting and resulted in the need for fire polishing to enable proper closure. Milk Bottles - Many milk bottles made with press-and-blow machines from the very early s into at least the s resulted in vertical side mold seams that gradually fade out on the neck distinctly below the base of the finish.
Click here for a picture of a typical s to s milk bottle. This exception to the side mold seam "rule" was caused by the specific workings of these machines which masked the upper portion of the side mold seam. Click on the image to the right to view both mold seam features pointed out on a press-and-blow machine manufactured milk bottle made by the Pacific Coast Glass Company San Francisco, CA.
If your bottle is a milk bottle that fits this description, click Machine-made Bottles to move to the Machine-made bottles dating page for more possible dating refinement and to pursue more information. The image to the left is a close-up of the shoulder, neck and finish of a small Sheaffers ink bottle click to enlarge for more detail.
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.
Dating old beer bottles
The side mold seam does not extend onto the top surface of the finish, i. These features are pointed out - and much more readable - on the larger hyperlinked image; click to view. The image to the right is a close-up of a small, medium green, machine-made ink bottle. As above, click on the image to view a larger and much more readable version with the various features pointed out. This termination of the side mold seam within the finish short of the rim Sheaffers ink or actually short of the finish itself green ink on these bottles makes it appear upon casual glance that these are mouth-blown bottles having either an improved tooled finish Sheaffers or an applied finish green ink.
There is also no neck ring mold seam immediately below the finish like found on most Owens machine produced bottles and on a majority of all machine-made bottles.
Instead, there is one located near the base of the neck indicating that the neck ring mold portion of the parison mold produced the finish, neck, and a portion of the shoulder. This is also pointed out on the image above; click to enlarge.
The earlier green glass ink bottle is also certainly machine-made, most likely on an early semi-automatic, blow-and-blow machine based on its crudeness and lack of a suction scar. 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.
Instead ,there is also one located near the base of the neck indicating that the neck ring mold portion of the parison mold produced the finish, neck, and a portion of the shoulder. 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. These bottles are discussed in more detail in the ink bottle section of the Household Bottles non-food related typology page.
If your bottle is an ink fitting the descriptions above, click Machine-made Bottles to move to the Machine-made bottles dating page for more possible dating refinement and to pursue more information. The concentric rings are not always as obvious as the picture shows click to enlarge and sometimes not visible, though if present it is a conclusive diagnostic feature.
Turn-mold bottle body showing faint concentric rings.