Diamond Glass Company
Royersford, PA (1885-1990)
Diamond Glass Company of Royersford, Pennsylvania produced a wide variety of containers throughout their long history.
(Please click here to see an early Diamond Glass bottle catalog posted on Tod von Mechow’s great informational site on antique soda and beer bottles.) Note: the original long URL was shortened through the tinyURL.com site : Diamond Glass Company catalog. This catalog is circa 1900-1905, and indicates that many of their soda bottles were marked with style or mold numbers on the base, but with no manufacturer’s mark. A few bottles are marked with a plain diamond, or “D.G.Co.”.
Most bottles found in the United States with a diamond marking (but no letters or numbers inside) embossed on the base or heel of the container can be safely attributed to Diamond Glass Company of Royersford.
Note: There are no doubt a few bottles in existence (marked with just a plain diamond) which cannot be attributed to Diamond Glass Company with 100% certainty, simply because Illinois Glass Company produced bottles with an “I in a diamond” and on some examples the letter ‘I’ is invisible or barely discernible. However, the chances are good that any particular bottle with just a plain diamond marking was indeed made by the Royersford concern. Bottles with numbers, or a number/letter combination placed within the diamond are considered to be products of Illinois Glass Company.
Diamond Glass Company was purchased in 1985 to become part of Diamond-Bathurst, and in 1987 the factory was acquired by Anchor Glass Container Corporation, who closed down the plant in 1990. (Some more background info on Anchor Glass Container Corporation is on my webpage about Anchor Hocking Glass Corporation, here).
Below, the typical “plain Diamond” mark as seen on the heel of more recent bottles………..this is on a clear glass non-returnable soda bottle made in 1986.
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