Patent dating chart, dating Zippo Lighters
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Gillette is one manufacturer for whom we have information on serial numbers and later date of manufacture codes that we can link to time. Date ranges are estimates. The number has nothing to do with when the jar was made.
They identify the position that the mold in which the jar was made held on the glassmaking machine. Ignore the Mold Number How about that big number on the bottom of many jars? AutoStrop and Rolls are two well known manufacturers who serial numbered their razors. All the coding systems are listed below.
These serial numbers were on the top of the guard, or sometimes the inner barrel.
Dating Zippo Lighters
What is the oldest Ball jar you own? This corresponds to the time King Gillette was directly associated with the business, and may have been at his insistence. The date code is the same format as Regular Windproof Lighters. Black crackle Zippos were apparently produced only for shipment to armed forces overseas and none were produced for domestic sales. Other makers included serial or manufacturing codes, but we do not have the keys.
The appearance wasn't so great and there was a tendency to rust, so a black crackle paint was used on these lighters. Again, the answer is unfortunately, no. Does that help date the jar?
Luckily, there are some tips and tricks you can use to determine an approximate age for your jar. He taught me everything I know about Ball jars, but not everything he knows.
Some razor makers put serial numbers on their razors, but we don't always have the key to how the serial numbers fit to dates of manufacture. Many of the early hinges were replaced, as have been some later ones, so the hinge barrel count is not always absolutely accurate as it is possible a repair replacement has been made.
Most machines would have from eight to ten molds, all making the same type of jar. These codes are found on the underside of the guard mechanism, or in cartridge razors, near the attachment mechanism for the blade. The difference between a and Zippo can be determined by the insert as the ones had markings on them. They were first made in Buffalo in and for several years after. These are called mold numbers.
Sometimes patent dates are a help, but they give you the front end of the date scale, and not always too exactly. That was the date when John Mason received his patent for the threaded screw-type closure, and it appears on many different brands of jars. The letter represents the year, found on the chart below, and the number correspond with the quarter of the year. Instead, larry english football dating I mean how do you tell how old your Ball jar is?