How do the Newport cigarette age codes work?

Newport cigarette age codes are a system used by the manufacturer to indicate the production date of the cigarettes. The codes typically consist of a series of letters and numbers printed on the packaging, which represent the week and year of manufacture. For example, a code like "L031" would indicate that the cigarettes were produced in the third week of a certain year. Consumers can use these codes to determine the freshness of the product and ensure they are purchasing cigarettes that are not past their prime.