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One of the most important clues to the age of a bottle is the style of the lip.In the picture below are shown a number of lip styles common during the last century.Bottles with suction scars were made in an Owens Automatic Bottle Machine and date after 1903.The Owens machine revolutionized the bottle industry.A pontil rod held the nearly molten bottle during the final stages of manufacture.The scar was left when the pontil was detached from the bottle. If the seams disappear in the neck, the bottle was probably "blown-in-mold" and dates circa 1820 to early 1900s.

The punty rod was dipped into hot glass and attached to the base of the bottle by one of the helpers.Then with a twisting motion, the top was uniformly shaped.Bottles produced during the last twenty years of the last century will show evidence of this twisting motion which left faint concentric rings around the mouth and upper part of the neck.Is the base indented with an irregular to round pontil scar?This, and no mold seams, is another indication of a hand-blown bottle.

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