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The appearance of the word "Zippo" in the bottom stamp provides another clue to dating. There have been three major changes, as camel in inset. From to the lighter 50s, the word Zippo was stamped in block collectors. The Zippo script logo was developed in the late collectors and was phased-in on the lighter bottom stamp how In the lighter 70s the logo was redesigned. It was incorporated into the bottom stamp in What began as a quality-control value for Zippo founder George G. To identify a lighter dating in any run of lighters returned for repair, the bottom of every Zippo anything was encoded with a series of markings.
Around the middle of the patent number on the insert was moved to the centre, then towards the end of the year, additional wording For best results use Zippo Flints and Fluid was added. There are a number of detail differences in the insert details of which can be found here.
Around Zippo replaced the hollow flint wheel rivet with a solid rivet. Hollow rivets continued to be used until around The hollow Rivet was used up tobut the solid rivet was introduced in Between these dates either rivet could have been fitted. Some lighters made in this era have a red felt pad at the bottom of the insert.
The Zippo dating information shown below is more accurate than the current Zippo This is a true model, with 3 dots on the left and 4 dots on the right, but there is no PAT. PEND. on a model. The models have the pat. # centered as well as having the. World Famous Zippo Windproof Lighters, Hand Warmers for gaming and outdoor enthusiasts, Candle and Utility Lighters, & More! Dating Zippo Lighters. Since , most Zippo lighters have carried a date code stamped on the base. Originally this was intended as a quality control record, so that lighters returned for repair could be identified as to when they were manufactured and if, for example, a number of lighters were returned with the same fault then Zippo could identify a possible defect in the .
These are mainly frombut have been found in lighters both earlier and later. Various shades of Red Felt have been documented, but it may have been that the fuel discoloured the felt over time.
Zippo dating dots
PAT Four dots either side, Pat to Left, Pat Pending has been removed. Possibly a model as one dot has been removed from the left.
Four dots either side, Pat Has been centralised. Four dots Right, three dots Left, Pat - This stamp is rumoured to exist.
Late Insert. The bottom letterings were alike, but differed as far as the depth of the strike that was made when stamping it. All the "shorter and more compact" logo.
This model has the "full stamp" bottom logo on a chrome plated steel case with a 5-barrel hinge. Early models had the patent number whereas later models had the patent number with the large pat.
Canned bottom, Stylized "Zippo", dating "dots" Dating determined by number of vertical lines. Dating determined by number of slashes. Dating determined by number of backslashes. Dating determined by roman numeral system. to Present: Year of manufacture inscribed on the bottom. to Inserts. The first insert used in this era is the insert from the previous page, which continued to be used until around Zippo dating dots Description: The appearance of the word "Zippo" in the bottom stamp provides another clue to dating. There have been three major changes, as camel in inset. From to the lighter 50s, the word Zippo was stamped in block collectors. The Zippo script logo was developed in the late collectors and was phased-in on the lighter bottom.
Very similar to the model except that it has a 5-barrel hinge on a chrome-plated brass case. Later models began using the patent number.
Mid Zippo changed the Logo to a stylized "Zorro" script style slanting from lower left side towards the upper right-hand side. The actual design is not shown in the codes below.
Zippo also began adding coding marks mid The "dots" on the left and right sides of the Zippo logo are located near the top of the Zippo logo, but this couldn't be shown. Innote that one dot has been removed from the left side.
A Piece of History - The WW2 Black Crackle Zippo Lighter!
Forthe left dot has returned, but the "PAT. From tothe patent numbers are centered.
This is a true model, with 3 dots on the left and 4 dots on the right, but there is no PAT. The models have the pat.
From now on only the dots or slashes are shown, but the look is exactly the same in all other ways as above. Zippo put no code on the bottom of a slim, so that both the regular and slim size lighters would have the same code from then on.
Zippo made two changes on the bottom of the cases mid Zippo used a new press machine in which caused the "canned" bottom of the lighter to be more dented in. Also, at this time, Zippo changed the "Z" logo on the word Zippo and gave the letter "Z" a "tail" hanging down on the right side.