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.(The two products were from separate companies which were cross-town [Sacramento, CA.] rivals during the late 19th to early 20th century.

snuff jar dating-69

An example of this is the finding of a few pontil scarred utilitarian bottles among otherwise late 19th or early 20th century refuse.

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.

The information on this website will, however, usually produce a reliable manufacturing date range for a majority of American utilitarian bottles manufactured from the early 1800s to the mid-20th century.

Using physical, manufacturing related diagnostic features, most utilitarian bottles can usually only be accurately placed within a date range of 10-15 years (i.e., 1870-1880 or 1885) . Like many industries making the leap from manual craftsman production to industrialization and automation, technological advances in bottle manufacturing were not immediately accepted by glass manufacturers or their workers.

Treen has become highly collectable due to its fine patina and tactile appeal.

In the latter half of the twentieth century, interest in treen and other wooden bygone objects grew considerably, as with interest in antiques in general.

)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.

When a likely or known "older" item is found in a known "newer" site it is referred to as deposition lag.

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.