How To Tell How Old A Glass Bottle Is

To aid beginning collectors and those interested in bottles i have developed a number of.

How to tell how old a glass bottle is. Find the markings by carefully examining the side and bottom of the bottle. Wear is easily seen without close inspection. If the seam extends only part way up the neck the bottle was most likely formed between the late 1700s and the early 1800s. Check the bottom of the bottle for what is known as a pontil mark.

Seams and pontil marks are two of the ways you can determine a bottle s age. Tell the age based on the mold seam can be found in bottle basics while these two characteristics are often a strong clue to age readers will be further helped by developing an understanding how the various categories of bottles changed over time. The pontil mark is the mark at the bottom of the bottle where it was attached to the glass blower s pontil rod. This grade defines a bottle with considerable wear the label will be missing or embossing damaged.

Other factors that affect the value of the bottle include age rarity and the overall condition of the bottle. Mold lines and machine marks appear on many antique bottles that were made during the late 19th and early 20th centuries. Seam runs up and under the applied lip glass but is. Glass color must be excellent as well with no cloudiness.

Here we tell you how to decode the age of the antique bottle you possess. Used a spring loaded wire and rubber seal. In a 3 piece mold a seam often runs horizontally around the shoulder of the bottle with opposing seams on the neck. No seam indicates a handblown glass bottle that predates the use of molds in bottle making.

Dark green beer bottles were used by many brewers in the 1800s. Find the markings on the bottle. The color of a bottle can be used as a reference to determine the age of the bottle. Antique glass bottles identification tips color.

If the seam extends only part way up the neck the bottle was most likely formed between the late 1700s and the early 1800s. Common on whisky bottles. While still completely intact a bottle of this grade shows overall wear. The product or manufacturer s name is typically printed on the side of the bottle while the manufacturers signature marking is usually printed on the bottom.

Bottles can be divided into four eras. Seam stops below lip. This is usually a clear identifier of an antique bottle. Old or antique bottles are identified by their markings.

To some extent the height of the mold seam on the bottle can indicate age. No seam indicates a handblown glass bottle that predates the use of molds in bottle making. Top formed with a tool that had profile of lip. The open pontil bottle describes bottles which were made from the 1600s to about 1855.

This is usually a clear identifier of an antique bottle. Colors like cobalt blue was used to color bottles right from 1870s to the 1930s. May have minor scrapes or chips. Pontil marks are circular shapes on the bottom of the bottle that indicate that the bottle is made of free blown glass.

Check the bottom of the bottle for what is known as a pontil mark. The higher the seam goes the newer the bottle. This mark occurs when the pontil or blowing tube is broken off the bottom of the bottle.