Zippo lighter dating code chart
The bottom stamp differs by having Niagara Falls, Ontario rather than Bradford, PA on it.
Zippos had a flat bottom until 1946 when the bottoms were indented.
Study the history of special issues, such as the unique model produced during World War II solely for military sale. In the 1950s, Zippo began a system of date codes for quality control.
You'll find these marks stamped on the bottom of the lighter and you can use this to determine the age.
If the Zippo is 1958 or later, check the Date Code Chart to find the year and, frequently, month of production. Please note: early Zippos in particular were prone to hinge failure.
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