How to Date Ball Canning Jars
This knowledge has helped me tremendously when visiting garage sales, flea markets and even antique shops. Just because it is blue and has a metal top on it doesn't necessarily mean it is an "antique."
I have several in my booth in the 1923-1933 range. So the next time you think you may have an oldie but goodie Ball Canning Jar, check the word "Ball" and not the number on the bottom which just indicates the mold. If they are newer they can still be used for crafts, regular canning or storage.