Table of Contents
How do I identify my glass manufacturer?
Makers can be identified by examining company marks and signatures located on the bottom of the glassware. However, since reproductions are common, it’s essential to study the marks, colors, and styles of genuine art glass to properly identify the maker of a piece.
What do the numbers on the bottom of old glass bottles mean?
In most cases, one- or two-digit numbers are actually mold numbers that indicate the specific bottle mold or section in an automatic bottle machine. If numerous molds were identical, each one received its own number. Base numbers also indicate bottle styles or shapes, manufacturing dates, or factory location codes.
How do I date Owens Illinois glass?
Typically, it is marked with a number called a “Liquor Bottle Permit Number” followed by a dash and a second number which is the date code. Many liquor bottles made by Owens-Illinois have the “Diamond and Oval with an I” logo embossed sideways on the base of the container.
Does Fostoria Glass have a mark?
Fostoria Glass Company Most Fostoria pieces are not marked and must be identified by the pattern and/or etching found on the piece. This type of acid etched mark was used during the 1970s on many Navarre pieces, according to “Collectible Glassware from the 40s, 50s, and 60s” by Gene Florence.
Are old glass bottles worth money?
The Age of the Bottle While not all old bottles are valuable, an older bottle is more likely to be worth more than a newer one. Seams and pontil marks are two of the ways you can determine a bottle’s age. The Iron Pontil bottle was made from 1840 to 1865.
What kind of glass has marks on it?
Here is another site, this one specializing on information concerning shot glasses: Marks seen on shot glasses . Most, if not all, of the marks illustrated there are frequently seen on other types of glassware as well, which makes the page quite helpful to a broader spectrum of collecting fields.
Are there any trademarks on industrial glassware?
Also included are a number of trademarks, emblems and logos seen on other types of glassware including tableware and industrial glass items such as railroad lantern lenses.
What kind of glass has m in a diamond on it?
The “M in a diamond” mark is confirmed on several different glass items including a clear druggist bottle circa 1885; clear and cobalt blue eyewash cups; and a miniature clear glass mouth-blown lamp with a ground lip and metal screw-top wick assembly which was seen on ebay and said to have possibly been used for medical/laboratory purposes.
Where are the manufacturers marks on beer bottles?
(For instance, some beer bottles marked “F. & P. BOCHART, NEW ALBANY, IND” are marked with a plain “M” on the bottom, and those would date sometime between 1890 and 1907, judging from the years that bottler was in business). The unknown (unidentified) glass manufacturer was probably located somewhere in the Midwest, i.e. IL, IN, OH or PA.