That it dating equipment are seem to devised by Elegance Kendrick within her 1963 publication “The Antique Bottle Collector

That it dating equipment are seem to devised by Elegance Kendrick within her 1963 publication “The Antique Bottle Collector

Even though there are samples of container which have mildew seams that fit these day ranges securely, the problem of dating container is more difficult compared to the easy understanding out of front side mildew seams

Among the longest powering “myths” in the wonderful world of bottle relationships is the fact that the top mold seam should be discover particularly good thermometer to choose the ages away from a bottle. The theory is that the highest the medial side mold seam towards the the new bottle the latest later on it actually was made – at the least from the time from the very early to middle 19th century through to the first couple of decades of your own twentieth 100 years. ” It book try pioneering and you will reprinted a couple of times into the 1970s that is by far the most prominent and you can extensively cited (because of the collectors and you will archaeologists the same) container guide actually written, which has a great deal of essentially reliable information.

This concept is articulated by Kendrick’s into the a section titled “The fresh Applied Lip” which contains a keen “Years Gs out-of Container” graph (Contour 9). Kendrick’s teaches you on the text (profiles forty-five-47) you to definitely.

It is a fact your mold seams may be used including a good thermometer to find the estimate ages of a bottle. This new nearer to the top the fresh package the fresh new seams continue, more latest is the production of the newest container.

Why this is certainly detailed let me reveal the build has popping up from the books out-of container matchmaking and you may character starting from Sellari’s courses (Sellari 1970:5) blogged immediately after Kendrick’s guide to just like the current due to the fact Fike (1998:4) and you may Heetderk’s ()

Brand new graph associated so it declaration cards one to container created before 1860 keeps a side mildew seam conclude on the neck or lower for the neck, anywhere between 1860 and you may 1880 the seam ends up following next the finish, anywhere between 1880 and you will 1900 brand new seam stops within the find yourself only below the finish rim (most useful lip facial skin), and those generated immediately following 1900 keeps mildew and mold seams stop close to the big facial skin of end up, we.elizabeth., rim (Kendrick 1963).

When it had been so easy most of this amazing site would be too many! For example, the process that makes a great tooled finish apparently removes outlines from the side mold seam up to an inch underneath the legs of the wind up whereas the average applied end comes with the seam end large – right at the bottom of the finish (Lockhart et. al. 2005e). It is very frequently detailed by providers toward e-bay┬« when describing the offerings. To possess a bigger discussion with the subject select Lockhart, et al. (2005e) – Debunking the brand new Myth of the Top Seam Thermometer

If unsure about what the lip, rim, or finish of a bottle is, check the Bottle Morphology sub-page. See the ground rim/lip portion of the main Bottle Finishes & Closures page for a discussion of this feature. If the bottle really does have a ground down rim/lip go to the No answer below. If you need more information on this diagnostic feature – including various images – click the following link: Bottle Finishes & Closures: Part II – Types or Styles of Finishes

Yes – The vertical side mold seam or seams go to the highest vertical point of the finish side and (usually) onto the top surface (rim) * of the finish And the top surface of the finish does not appear ground down.

This is a “machine-made” bottle or jar and will also usually have a highly diagnostic lateral mold seam just below the finish base that circles the neck. This is especially obvious with narrow mouth or bore bottles but can be found on wide mouth/bore bottles also – like canning jars. The picture to the left shows both of these mold seams (click to enlarge).

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