Ball Jar Numbers On Bottom

The numbers 2 6 do not mean as much as other factors such as the exact. Probably in the majority of cases single or double digit numbers are mold numbers merely serving to identify a particular mold or section mold cavity in an automatic bottle manufacturing machine that was used to form the bottle jar or other glass item. If a number of identical bottle molds are being used simultaneously each mold would be assigned a number.

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If You Find A Ball Jar Stamped With The 13 On The Bottom Hold On

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Aqua atlas strong shoulder mason quart bead or ledge seal c.

Ball jar numbers on bottom. One of the most common emails i receive comes with a description of a jar e g blue pint perfect mason with the number 5 on the bottom and the question how old is my jar. This comes from the point where a metal rod was attached to the bottom of the jar for cooling while the blowing rod was broken away from the mouth of the jar after it was formed. Click here for a handy chart that gives dates for the different logos used. 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.

The earliest ball jars which were hand blown are easy to identify because the bottom of the jar will have a mark called a pontil scar. Note that the numbers on the bottom refer to mold numbers and not to model numbers. Recycling was not a big factor in. The logo is the best way to date the jars because the ball logo changed throughout the years.

A ball mason jar with a number 1 on the bottom is not very old. The 1 on the bottom denotes the type of recycling the jar requires if one is to recycle it. Rather the mold number tells you where the jar was positioned on the glass making machine that was used to produce it. 1920 hazel atlas company 1902 1964 10 12 00.

Hi i have been searching to no avail as to what the number is on the bottom of my blue perfect mason jar with zinc lid it appears to be a backward 6 underscored or backward 9 over scored but it has a much longer tail and doesn t look at all like the 6 s or 9 s i ve seen. Instead i mean how do you tell how old your ball jar is. 0 4 6 7. I m the current contact for information about historical ball jars on the ball corporation web site.

Most of the typical ball perfect mason s are marked with a mold number between 0 and 15 on the bottom. As can be readily discovered there were many different sets of. The numbers on the bottom are. Aqua ball quart shoulder seal c 1900 1910 triple l large seeds 15 18 00.

Antique atlas canning jar. On some jar variants such as the first ball embossing variant on these jars logo 5 in chart shown below used circa 1913 1923 on bpm jars the number may be accompanied by a letter to the right such as a or c. Aqua ball perfect mason. Aqua ball mason 1 2 gallon shoulder seal c.

Ignore the mold number on the jar.