Look for the early BBGMC logo. This is one of the earliest logos used by Ball, back when the company was known as the Ball Brothers Glass Manufacturing Company. Because the jars were made in Buffalo, New York, these are called Buffalo jars today.
Buffalo jars are rare and old. If you have a mason jar with this logo, it was manufactured between 1885 and 1886.[1] X Research source
See if your jar has block letters. Ball began using block letters for the logo on their jars in 1892, and continued using this type of logo until 1896. The major difference between the lettering on these jars and newer jars is the lettering on the older jars is simple printing rather than cursive or stylized lettering.[2] X Research source
Check for the first Ball script logo. In 1895, Ball introduced their first logo that used cursive lettering. This is also when Ball began underlining their logo. Between 1895 and 1896, the Ball logo was relatively straight rather than angled toward the upper right side of the jar.
Look for the 3-L logo. The Ball logo has remained relatively standard since the first script logo was introduced, but there have been a number of small variations that can be used to date the jar. The 3-L logo, for instance, was only used between 1900 and 1910.
This logo is called the 3-L logo because the decorative loop at the end of the logo looks like a third L in the Ball name.[3] X Research source
Look for the dropped A. Between 1910 and 1923, the A in the word Ball had an ascender at the beginning that looked like it should connect with the B. Because the B and the A don’t connect, this called the dropped A.
At this time, Ball also adopted the 2-L style logo, where the decorative loop on the end of the name was dropped.
Look for the B connected to the underscore. Starting in the 1960s, the lower part of the “B” connected to the underline. This indicates a date range between 1960 and today.[4] X Research source
Look for Christmas lettering. Ball mason jars with Christmas lettering have a unique design that doesn’t use their original printed or their traditional cursive lettering. Instead, the lettering is calligraphy, and the jar reads “Masons Patent.”
These Ball mason jars were manufactured in 1890.[5] X Research source
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Check for identifying words. Over the years, Ball has introduced a variety of different jars that can be identified with certain words that are printed on the jars. Some of these words were used for many years, but the style often changed every couple years.
“Improved:” There were a few times when Ball produced jars with “Improved,” including in the 1890s, when the jars were printed with “Ball Improved 1858.” Later, the jars were produced with the wording “Ball Mason Improved” between 1900 and 1933.
“Special:” Between 1910 and 1913, Ball mason jars were printed with the words “Ball Special Mason” in all block letters.
“Perfect:” Between 1913 and 1922, the word “Perfect” was slightly offset, and is left indented from the word “Mason” below.[6] X Research source
“Sanitary:” This word was printed on Ball mason jars around 1913 and 1915 to indicate that they had the sanitary sure seal. The word “Sanitary” is in all capital letters, is italicized, and appears below the Ball logo.
“Ideal”: These were made between 1915 and 1962.
“Square:” Jars with the word “Square” were produced in 1925.
“Eclipse:” These wide-mouthed jars were made between 1926 and 1952.
See if your jar is an off-size. There are a few oddly sized Ball mason jars that were produced at very specific times, so the size of the jar can be used to date its production.
In the 1920s and early 1930s, Ball produced 40-ounce (1.2-L) jars that were used for coffee, and 42-ounce (1.24-L) jars that were popular with bootleggers.[7] X Research source
To measure the capacity of your jar, fill it with water and then measure the amount of water the jar holds.
Use the color to get an idea of the age. Ball created a number of colored mason jars over the years, and while the most common is blue, there were also jars produced in other colors as well, such as green and yellow.
Blue glass Ball jars were produced in the late 1890s and early 1900s, but the company stopped producing these in 1937.
There were also some brown amber jars produced in the 1950s, but most of the jars produced after the 1940s were made of clear glass.[8] X Research source
Inspect the jar for mistakes. There have been a number of mason jars produced over the years that have spelling errors and other mistakes printed on the jars, and these can be compared with reference materials to date the jars. If you find a jar with an error, find a copy of the Redbook (a price guide for fruit jar collectors) to determine the age and price of the jar based on the error.[9] X Research source
One of the most common error jars is a Ball jar with a misspelling of the word “Perfect,” and common variations include “perffct,” “peprect,” and “perefct.”
Check for upside-down writing. Ball jars that have an upside-down logo are actually upside-down jars that were designed to function as coffee dispensers. These were manufactured between 1900 and 1910.[10] X Research source
Ignore the 1858 patent year. Ball mason jars were produced for many years with the year 1858 printed on them, but this is no indication of the age of jar itself. Rather, 1858 is the year that John Mason was granted a patent for his mason jar design, and the Ball company used this patent year on many jars.[11] X Research source
Ignore the 1908 patent date. This was another patent date that was printed on many mason jars, and that has no bearing on the year of production. In fact, Ball used this patent date on their jars well into the 1930s, so this year cannot be used to accurately date a Ball jar.[12] X Research source
Ignore the mold number on the jar. Many Ball mason jars have a number printed on the bottom of the jar, but this is a mold number that does not indicate the year of production. Rather, the mold number tells you where the jar was positioned on the glass-making machine that was used to produce it.
Mold numbers are generally a number between zero and 15, and they’ll sometimes have a letter included as well.[13] X Research source
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