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Any help with the year and manufacture would be appreciated! They have made tens of thousands of noticeably different types counting all the different models, shapes, profiles, sizes, glass colors, and markings and the truth is that most of them do not have much monetary value to bottle collectors at the present time,mostly because they are relatively recent, have no markings except for the bottoms, and are often of clear glass.

It is likely but not certain that the 6 refers to Plant 6 Charlestown, WV and the 7 is a date indicator - here it would mean 1923-1927.

The last glass plant in the town was located at 70 Sewell St.

Hi, Yes, since DURAGLAS brand name was instituted in 1940, the bottle is from the 1940s, made at plant 14 which was Bridgeton, New Jersey.

2 If a date code does NOT have a period after the number, that still leaves room for error because it could potentially stand for any decade, right? and who may have used it.

currently [2020] operates 20 glass manufacturing facilities within North America.

Beware of copycat bottles that feature molded pontil marks.

BTW, periods seen on some glass insulators made by Owens-Illinois, Whitall Tatum, Kerr and Armstrong CAN indicate years, but this is a separate issue from bottles.

I can say that Owens-Illinois Glass Company has made untold BILLIONS of bottles and jars of all kinds over the last 87 years.