Re: canning jar ??

A good way to tell if your mason jar is old is to check out the top of the
jar to see if it is ground glass.
That is, the top of the Mason jar is ground down with a grinding wheel and
feels rough on the top.
Check eBay for pictures of jars like yours.
There should be plenty.

"gail mac murray" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I have a jar that reads Mason's Patent Nov.30th 1858 it a real lite blue
> almost clear and it won't stand up because the bottom is out set so it
> rocks and there are 5 glass dots on the bottom also. How do i tell if
> its a real old one and not a fake? It is a 1 qt size. I can send pic.
> Thanks Gail
>