Dating bottles by their tops and bases

Guidelines for Determining the Age of Antique Bottles - Historic.

(NOTE: the article on this page is pertaining to GLASS containers, and does not apply to the subject of modern / recent PLASTIC containers, which is an entirely separate field of study, and is discussed on many other websites.

How old is "old"? Bottles - Cal Fire

The number (within a triangle with rounded corners) found on the bottom of plastic bottles is a code indicating the type of plastic the bottle is made of, and pertains to the subject of recycling) .

Historic Bottle Website - Homepage

Antique Milk Bottles

Always look very closely over the entire glass bottle or other container to make sure there is not some type of logo (emblem, trademark, initials, or just a letter) that mht indicate the actual glass manufacturer.In these cases, the general style, shape, glass color and other characteristics can at least help narrow down the possible age range of a particular specimen.

Historic Bottle Website - Homepage

In many cases there is NO such mark, with only a number or numbers to be seen.


Dating bottles by their tops and bases:

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