I'd greatly appreciate any help identifying what was in this bottle but must importantly its age.
I noticed it was older than most of my finds because the side seam ends just under the finish. At this point, the glass is uneven as you observe the circumference. I think this means it was manufactured with the 'Applied Finish' technique.
I see no tooling marks, nor disappearance of seam prior to the finish.
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The side seam extends all the way to the base, but terminates at the base. So likely a cup bottom mold.
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Here you can also see the significant push up in the base. The push up is very uneven as seen in the next photo:
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There are significant air bubbles and flaws in there glass:
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I cannot tell is there are air venting marks on the surface anywhere. If there are any, they are directly on the seam, and they are not at the same height on each seam.
There is no embossing on the bottle whatsoever, and absolutely no manufacturer's marks on the base.
In the very first photo, you can just discern that there is a slight bevel to the very top surface (lip).
And insights are most appreciated especially with regard to age.
Thank you in advance.
Laurence