Dating antiques by patent number

Posted by / 08-Mar-2020 07:50

Dating antiques by patent number

Dating Zippo lighters produced in Canada from 1950 until 1986 is difficult due to the lack of date coding.

However, few collectors, buyers or sellers have the ability to memorise all china marka, signatures or number codes used on antiques.The right hand image demonstrates a design registration mark for 22nd October 1875 (B for October and S for 1875).Table: KM1.i Registration Marks 1842 to 1883 For the purposes of dating antiques, the bundle code does not matter.Beginning in 1966, the same markings were used on both the slim and regular.In 2002, the holes in the chimney of slim lighters were enlarged.

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This is probably why the Victorian kite mark was changed to a Registration serial number in 1884.

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