Dating your zippo
For this reason this page should be considered as a guideline only. This stamp was used until and a lighter with this stamp could have been made anywhere between those dates.There is truly nothing the average soldier would rather have.Even prior to the coding system we can go some way to identifying the approximate year of manufacture, as the stamping on the bottom has changed slightly over the years. From 1936 until 1953 the bottom will have "PAT2032695 MADE IN U. A." Lighters made in 1953-1955 will have PAT 2517191 ® PAT. On the image below we can clearly see that there are four dots, either side of the word Zippo. The next set of codes used upright lines either side of the word Zippo. Again 8 lines were used for the first year of the series, with one line being removed each year.Lighters assembled at the Canadian factory are covered here - Dating Canadian Lighters As lighters are meant to be used, coins or keys carried in the same pocket can cause scratches on the bottom of the lighter so it is necessary to look very carefully at the bottom, as the marking can be quite difficult to make out. The first lighters (1933 to 1935) can easily be identified by the words "PAT PENDING MADE IN U. From 1974 until 1981 the solidus (now commonly referred to as a forward slash) was used.
Much research has been undertaken to try to date these and it appears that the first base usually has a nickel silver insert.This series continued until 2000 In March 2000 the roman numerals were supplemented with the actual year of manufacture (2000) printed below the roman numeral (XVI). Then in 2001 the roman numerals were removed completely and just the last two digits of the year were shown (01, 02 etc) Dating Zippo Lighters Reference for Dating Zippo Lighters While the information for dating a Zippo is widely available, it isn't that handy to find it all in a single location. This should provide the information to fix a relatively precise date for any Zippo lighter. Slim lighters were first introduced in 1956, with a flat bottom and no date code.