What would you like to do?
Why are blue ball mason jars numbered on the bottoms?
Collectors frequently refer to these numbers as "mold numbers." However, in some cases, this term oversimplifies what the numbers represented. Originally when jars were blown by hand, the number represented a specific glass blower and his team. At the end of the day the blower and his team would get paid for the amount of jars they produced as determined by the number of jars made with a given number on them. I.E. glassblower #3 made 200 jars that day and he and his team therefore gets paid X number of dollars at X cents per jar produced. Later, when glass making went to machine the numbers represented the mold or machine the jar was made from (usually 4-8 molds per machine or one to several machines per factory.) That way the plant manager could check quality control, production, etc. Today you can frequently find numbers on new jars that indicate date of manufacture, plant location, job number, etc. There is a rumor that jars with the number 13 were more valuable because superstitious people were afraid to can in them, broke them or threw them away. However, I have never found any concrete evidence to back up this claim. Lately, these jars have sold for more on on-line auctions such as eBay. Another View: Having spoken with many distinguished Southern Gentlemen that grew up during the days of moonshine I was informed by more than one distinguished Southern Gentleman that these bottles were usually broken by the Moonshine Runners because yes they were superstitious and felt like this increased their risk for getting stopped by the law. This tale has been passed on for many years by Southern Moonshiners and their runners.
Was this answer useful?
Thanks for the feedback!
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. Recycling was n…ot a big factor in manufacturing until the late 1970's. CORRECT ANSWER: I'm sorry but your answer is very incorrect. There have never been numbers on glass to denote recycling needs. Glass is glass. The numbers you refer to are on plastics. The number on the bottom of most jars indicates the mold number and/or, on the much older jars, the mold blower's ID and count references.
It's worth about $20.00 depending on it's condition. The number on the bottom usually represents the number of the glass blower. The glass blower would be able to keep account… of how many jars he or she blew that day... The most sought after blue mason jars have the number 13 on the bottom. It was said that most of them were broken by superstitious people who didn't want to use a jar with the number 13 on it.
Quart size = 12.99 half gallon = 19.99 This is buy it now on eBay I get mine by the pound though so prices vary.
they are 25 dollars each
Many of these blue Mason jars are worth prices close to $25 each. The exact price will vary depending upon the condition of the jar.
About a dollar at a rummage sale.
A Perfect Mason,Blue,Zinc lid, 1 qt around $14.
Well, this jar would be around 2 dollars. I have 20 of them that are sitting in my basement that I found in a barn.
It is worth $6 - $15 depending on condition and true age.
The understanding is each worker was asigned a number and that's that worker number
They are not worth a lot, the number 1 is the size of the jar. All jars of that size will have a 1 on them.
There is usually a makers mark on the bottom of the jar and the numbers are generally the mold numbers that the jar was made from. They can also contain date codes as to when …the jar was made, but normally are only mold codes. They can also give reference (via the mold codes) as to where the jar was manufactured.
In Food Canning
I believe the the number 6 is for recycling purposes. There are still many variables to determine the price, but I don't think you should expect much mo…ney.
When it comes to old bottles, you need to be really precise in your description. My guess is that you have a jar that is marked "Ball Perfect Mason" but that limits things dow…n to dozens of variants. Most are not worth that much but there are exceptions to every rule. Your best bet is to post a photo with a clear description on an antique bottle forum site and connect with other collectors.