Zippo slim lighter dating
These earlier lighters are quite rare and will be covered on a separate page.When writing this page I have used information from lighters that were engraved, at the factory, with either a date or a company logo with a specific anniversary.The first stamp used on the base of the lighter bore the legend "PAT. This was used on lighters manufactured until around the end of 1950. There are many examples of "Pat Pend" cases with "Pat 1950" inserts (see below) these lighters would have been made around the time of the changeover at the end of 1950 using stock cases and newer inserts.Dating "Pre Coded" Zippos 1946 - 1955 The date coding on Zippo lighters was introduced in late 1955, so lighters made after this date are very easy to identify.On the two lighters below we can see how the spacing between the letters differed over time.On the first lighter, ZIPPO starts between the 3 & 2, whereas on the second it starts between the 2 & 6.
Dating lighters made at the Canadian factory is a little more difficult, and often confusing, but with a little detective work, many of the clues are there.Another difference worthy of note is in the design of the flint wheel.