How do you explain this seam

[sandchip]

Contents stain line from the bottle laying on its side, maybe?

 

[appliedlips]

No, the pictures are deceiving it is raised inside and out and can easily be felt and perfectly straight. It seems to almost refract light and there is some blackish stain on the ridge inside the base but no where else. I have thought long and hard and now my head hurts and it still does not make any sense.

 

[sandchip]

Definitely an oddball. You say the raised line can be felt on the applied collar, too? Have you tried a black light, just for the heck of it?

 

[cowseatmaize]

Contents stain line from the bottle laying on its side, maybe?

I like that idea. It would be like a bubble level and be perfectly straight like that.
If you put a piece if coat hanger inside can you feel it catch on it?

 

[cowseatmaize]

If you put a piece if coat hanger inside can you feel it catch on it?

My apologies, I missed you said it was raised.

 

[Poison_Us]

ORIGINAL: appliedlips

base

When I look at this, I see 2 lines (could be inside and outside...) but here at the corner, 1 line dips down for some reason. I dont know if that light bending the inside line or what. This may be the latest entry in the "unanswered questions" area.

 

[sandchip]

The line dipping down on the corner could be a case of parallax. Got a feeling that if veiwed straight on, they'd line up. I'm wondering if this bottle was laying in some kind of liquid, long enough for some of it to evaporate, leaving a line of deposit. That might explain the raised lines, inside and out, that line up with each other.

 

[CazDigger]

Hard to tell but it looks like a darker swirl in the glass, not a seam.

 

[ktbi]

Without being able to hold the bottle, I think I agree with Jimbo, because the line is inside and out and around the lip. I like oddball quirks in bottles. Makes them a little more interesting....Thnks for posting...Ron

 

[blobbottlebob]

I agree with Caz (and poison). It looks like a thin ring of slag (or bubbles?) inside the glass when it was blown into the mold. I don't know enough about glassblowing to know if it would be possible to make such a symmetrical line while blowing the molten glass? Where's Red?