Please be aware that in order to gain the maximum information about any particular bottle (e.g., dating, typing) the user must usually must review a number of pages within this website.Unfortunately, the complexities of precisely dating bottles is beyond the scope of any simple key.
Pontiled base fragments could also be from later produced "specialty" bottles which are described below.5.
Some bottle shapes are indicative of a particular manufacturing era, though many bottle styles/shapes were used for so many years - like the cylinder whiskey "fifth" or square snuff bottle - that the shape itself is not indicative of age.
Of course, soda & beer were reused up until quite recently.
The bottle pictured to the right has a Wait's Liver and Kidney Bitters label pasted over the embossing of a Star Kidney and Liver Bitters bottle!
This website describes our services and provides methodological and source information that supplements and supports our contract investigations and research interests.
THE X-RAYS ARE ON AND THE LAB IS OPEN: Craig has retired and the lab is open under a new laboratory director and owner, Alex Nyers.
A NEW IAOS PUBLICATION: A new obsidian-related volume, Twenty Five Years on the Cutting Edge of Obsidian Studies, has recently been published by the International Association for Obsidian Studies (IAOS).
To have a look at a sample or to buy a copy online through Pay Pal, click HERE.
In short, there was (and is) nothing to stop a glassmaker from using an obsolete method in the production of a bottle.3.
Some technological changes were expensive and not adopted by glass makers until it became an "adapt or perish" issue and many glass factories just perished.
Acceptance often occurred over a period of many years or decades in some cases.