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...maybe an early Pfizer bottle
or some other chem company.
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