Messy mold seams

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Curiouser&Curiouser

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The more I try to research this bottle, the more confused I get. I’m such a novice! Are crooked mold seams common? These appear to be across the diagonal of the bottle and disappear near the bottom third. Plus I can’t tell if that’s a “C” or a “G” after the “P” in the maker’s mark. Is anyone familiar with this mark? Trying to get an idea of the age & manufacturer.
 

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CanadianBottles

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No that definitely isn't common, I've never seen a bottle with a mold seam as weird as that. Not sure what would cause it.
 

shotdwn

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I'm wondering if the mold they used wasn't cracked when they made the bottle? Everything else about it looks normal.
 

sandchip

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You'll see it pretty regularly in early ABM bottles. It's a result of the fact that they are blown into two molds, the first being upside down, undersized and in the shape of a long truncated cone (also why you sometimes see an irregular circle or oval line on the base), in order to give the parison some degree of uniformity, sort of a preform mold. The parison is then removed from that mold, being held by the top (resulting in that seam below the lip) flipped over and inserted into the full-size mold where final blowing is completed. That crooked mold line is from the first mold, as a result of there having been some degree of rotation in moving from the first to the second mold. Hope this makes sense and helps.
 

Curiouser&Curiouser

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Thank you Sandchip, that makes sense! Meanwhile, I was finally able to see a very faint “I” in front of the “P” in the maker’s mark. The next letter I decided is a “G” rather than a “C”. That makes this an Illinois-Pacific Glass Company Bottle. 1902-1926. Does the characteristic you mentioned help narrow the dating down any closer than this?
 

hemihampton

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It does possibly look like a ABM bottle like sandchip mentioned, that would put it in the time frame you just mentioned. LEON.
 

sandchip

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It's an early ABM piece. If I had to guess, I'd say around 1910.
 

willong

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You'll see it pretty regularly in early ABM bottles. It's a result of the fact that they are blown into two molds, the first being upside down, undersized and in the shape of a long truncated cone (also why you sometimes see an irregular circle or oval line on the base), in order to give the parison some degree of uniformity, sort of a preform mold. The parison is then removed from that mold, being held by the top (resulting in that seam below the lip) flipped over and inserted into the full-size mold where final blowing is completed. That crooked mold line is from the first mold, as a result of there having been some degree of rotation in moving from the first to the second mold. Hope this makes sense and helps.

I just wanted to compliment you on that answer--very insightful!
 

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