Here is another favorite.

[Marino13]

I love glass, especially cobalt blue. I picked this up recently. No makers marks but the pontil makes me think it's older. Any ideas ?

 

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[Tpmetal]

The pontil marks simply mean its hand made, and are only an solid indicator of age in mass produced bottles. This could have been produced yesterday, or 100 years ago. I would wager closer to yesterday than 100 years ago though.

 

[Blak bart]

I love glass too.