Dating good housekeeping guarantees
Labels were not always printed in the same location (city or state) as that of the manufacturer or distributor so you may have to make some long distance phone calls or write some letters to learn about the printing company's history.
The date of manufacture (printing) may appear on it or sometimes be stamped on the backside.
The following information can be used to help document the age of your tins.
You will be fortunate to date your tin right away, most of them will require you to carefully study their appearance both from a structure stand-point and how they are decorated or finished.
Some collectors shy away from collecting tins with paper labels, but besides being very attractive, they can provide the name of the label's printer or lithographer.Addresses on tins can often be linked to a time period, even down to the exact year, if you use an old city directory or telephone book.If you're collecting local brand/company tins you probably have access to a library or historical society that have these books.Some very obvious clues may not be sufficient, may be misleading, or have to be combined with other knowns to arrive at an accurate or close approximate date.Let's start off with some general things that apply to most 20th century tins and to some 19th.
By tying in certain company events and changes, the graphics and text on your tin may be able to determine the time period it was introduced and used.