Your tin may have graphics or text that can be attributed to a particular time period.Match clothing, furniture, table settings, automobile make, and slogans (ex.There are some exceptions to this; images of Abe Lincoln and Ben Franklin have endured for hundreds of years in advertising.You may need to invest in some good history books, encyclopedias, and old product sales catalogs for reference sources.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.Another source of information could be a merchandise catalog. sold many products years ago and you may be able to date an item by its appearance in the catalog.
Along the same lines; if you also collect magazines/newspaper ads for these companies/brands, they can date your tin by matching your tin's description to that in the ad.
(Note: In our time of nostalgia advertising- this may not be entirely applicable, but other clues will provide more identification information.) The construction of your tin may also provide clues to its age.
In the 1930's/40's tins were constructed of rather thick steel sheet.
I'm going to be guessing here, but I would think that the "Limited Edition" became widely used after the 1970's.
Many tins marked with this usually have a date associated with its issuance.