Question: What are the key questions for bottle dating?

When did bottles start having seams?

Dating Bottles with the The concept is that the higher the side mold seam on the bottle the later it was made - at least in the era from the early to mid 19th century until the first few decades of the 20th century.

Why is there an indent in Corona bottles?

In the early days of modern bottle making, glass blowers learned that a deep indentation made the bottle sturdier. Bottles were made this way intentionally so the sharp crease around the conical shape would form a crevice where the wines sediment could collect and solidify.

Why do bottles have a notch?

The Punt Allows The Bottle To Stand Upright Glassblowers used to create punts to push the seam of a bottle up, allowing the bottle to stand upright while preventing glass at the bottom of the bottle from sticking out and cutting people.

Can glass be dented?

Its possible for glass to chip in a way that is smooth and uniform enough to look like its dented. Glass is somewhat elastic but it does not bend and dent like this. Glass does not work this way.

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