How can I date an old bottle?

Start with mold seams, lip, base, pontil, closure, glass color, embossing, and label style. A date should come from multiple clues, not one mark.

Does a patent date tell the bottle's age?

Not always. A patent date can be an earliest possible date and may have been used for years after the patent.

Are machine-made bottles always modern?

They are generally 20th century or later, but exact dating depends on maker marks, closure, label, and product type.

Updated May 4, 2026

How to date old bottles

Date an old bottle by checking several clues together: seam height, lip type, pontil or base mark, closure, color, embossing, label, and product category.

Generated editorial support image, not an auction lot. Bottle dating should combine multiple physical clues.

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Quick identification checklist

Seams that stop below the lip usually point earlier than seams that run through the lip.
Applied lips, tooled lips, pontil marks, cork closures, and screw threads each narrow the date range.
Use patent dates, base marks, and labels carefully. They support a date; they do not always state it.

Key value drivers

Dating matters because age can change value only when it aligns with rarity, category, condition, and demand. A common early bottle may be modest, while a later branded bottle can matter if collectors want it.

Auction evidence from Appraisily's database

These records are market examples, not final appraisals. They show different age and category signals that need separate review.

Photo	Category	Sale	Date	Lot	Realized	What it shows
	19th-century bottles	Eldred's	Jan. 29, 2026	Four amber glass bottles, 19th Century	USD 800	Age can matter when form and condition support it.
No lot image	Victorian apothecary bottle	Sarasota Estate Auction	Apr. 19, 2026	Antique Victorian cobalt glass Oxymel Scillae apothecary bottle	USD 100	Period and use both affect the read.
No lot image	1881 canning jar	Hoch LTD.	Mar. 1, 2026	Van Vliet Jar of 1881 Canning Jar	USD 650	Dateable jar systems can support stronger identification.

Condition and authenticity cautions

Do not date from color alone. Sun-purpled glass, reproduction bottles, repaired lips, replaced closures, and patent-date confusion can lead to the wrong period and wrong value assumption.

Photo checklist

Full bottle, lip, seam path, base, closure, embossing, label, color, and scale reference.
Close-ups of pontil, mold marks, date codes, patent marks, chips, cracks, and any paper label.

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