I need an opinion on this one

[JALTMAN1103]

maybe an early Pfizer bottle
or some other chem company.

I was wondering if any of you had made any progress in finding information on this bottle. I recently found one similar to it in a 1930s-1950s trash pile that I recently discovered on my property. I'm curious what is the purpose of the raised bumps on the flat or concave side of the bottle? I'm New to this forum, but I'll try to post photos...

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[nhpharm]

Bottle was made by Owens Illinois for the Pennsylvania Glass Products Company of Pittsburgh. It seems that all of their bottles had these raised dots but I've not seen any indication of what they were for.

 

[JALTMAN1103]

Bottle was made by Owens Illinois for the Pennsylvania Glass Products Company of Pittsburgh. It seems that all of their bottles had these raised dots but I've not seen any indication of what they were for.

Thanks for the additional information.

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[andy volkerts]

Definitely O I glass bottle. I think that Pennsy glass products co resold the bottles to their customers, which some of were chemical cos, so it could have held most anything, looks like 1915 - 40 in age.