Bottle dating examples
alot of questions and because I agreed to help put together a "bottle dating" FAQ for this site.1) Tell me what you know on how to date the actual glass bottles. Base type (for examples, click here): Open pontilled: usually date before 1860. If you want further help on dating your bottle, then contact: Reggie Lynch at Email rlynch .When a likely or known "older" item is found in a known "newer" site it is referred to as deposition lag.
)Reuse, of course, does not change the manufacturing date of the bottle itself, but care must be exercised when using the known date of one or a few bottles to date other items found from the same context.
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.
Other diagnostic tools must be used to date these items.
It is unlikely that this bottle was made during the same era, but instead was reused for a lengthy period or otherwise retained until broken or discarded.
Pontiled base fragments could also be from later produced "specialty" bottles which are described below.5.
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!