Dating pots


Japan could no longer mark pottery with the Nippon name and the newly-formed Czechoslovakia developed an American spelling that was often hyphenated Czecho-Slovakia.

Check back stamps or marks for changes in countries.

The source dating code is an element of standardization that is administered by the ...

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Dating pots

Upper Right: Starting in 1970, Gibson began stamping “Made in USA” on the back of the headstock.

Lower Right: The fourth and fifth numbers of this seven-digit potentiometer date code reveal the last two digits of its year of manufacture. Hi Brian, There’s no question that dating Gibson guitars is challenging—and sometimes downright impossible.

This act required that country of origin be marked on all imports. Changes enacted to the Tariff Act in 1914 required the words "made in," followed by the country of origin.

According to Harry Rinker, a noted authority on collectibles, marks were not required on individual pieces of a set. Items imported after about 1914 should be marked with this additional information. The 1921 changes to the Tariff Act required countries to use the American spelling of the name.

After World War II, Germany became East Germany and West Germany, so imports marked "Made in Western Germany" date from about 1950 to 1990.