Ball jar help please.

[Haveaball]

 

[Haveaball]

Don’t see where I left descriptions of jars. About the only thing you don’t see is a 0 stamped top left of ball. From research the 3-l is not that valuable but never saw the 0 stamped in.

 

[Haveaball]

Don’t see where I left descriptions of jars. About the only thing you don’t see is a 0 stamped top left of ball. From research the 3-l is not that valuable but never saw the 0 stamped in.

 

[Haveaball]

Gotta be a mold mark? You can feel the hump on inside too.

 

[jarsnstuff]

I don't see where there's an "O" stamped in on either of the jars you pictured. What you show in the last photo appears to be a piece of junk in the glass, fairly common in older jars.

 

[Haveaball]

I don't see where there's an "O" stamped in on either of the jars you pictured. What you show in the last photo appears to be a piece of junk in the glass, fairly common in older jars.

Definitely a 0