In order to use Medscape, your browser must be set to accept cookies delivered by the Medscape site.Medscape uses cookies to customize the site based on the information we collect at registration.

dating old medicine bottles-89

The earliest bottles were made by a glassblower using a blowpipe, and free-blown bottles will lack seams. A free-blown bottle will often exhibit a scar on its base from when the bottle was detached from the blowpipe (pontil). If the bottle lacks mold seams but exhibits a high degree of symmetry, it may be dip- or turn-molded and probably dates before 1850.

Bottles With Mold Seams Check to see if seams go all the way from the base to the lip.

If the seam disappears in the neck, then the bottle was probably “blown-in-mold,” and dates circa 1800s to 1915.

Note if bottle has seams that extend all the way to the lip.

These are machine made and date from the early 20th century and later. Bottles with mold seams and suction scars are made in an Owens Automatic Bottle Machine and date after 1903.

The Owens machine revolutionized the bottle industry, and made bottles very common objects.Bottles with Labels and Embossed Lettering Check for embossed lettering.Embossed lettering can date prior to 1850, but most date to the late 19th century and later.Embossed lettering is especially common on patent medicine bottles that date from the mid-19th century through the early 20th century. This often indicates the bottle manufacturer and will help date the bottle.Check for the following lettering: Federal Law Forbids Sale or Reusw of This Bottle. (Historic Glass Bottle Identification & Information Website) Free-blown (no mold) No mold seams Asymmetrical and non-uniform Up to about the 1860s in the archaeological record Simple Two-piece mold (“Hinged mold” Mold seam extends from just below finish, down the neck and side, across the bottom, and up the other side Symmetrical, uniform shapes May have embossed lettering on body, especially after 1869 Ca.These are liquor bottles that date from 1935-1960s. 1810-1880 “Cup” mold Mold seam on each side that extends from just below the finish down to the edge (“heel”) of the base Most-common technology in the late 19th and early 20th centuries (ca.