I have noticed this tin doing the rounds in the last little while and have wondered how the seller has come to his asking price(s).
The illustrations are "The Four Seasons" by Czech artist Alphonse Maria Mucha. He was largely ignored during his lifetime but has become wildly popular in modern times. Still, that is a lot of money for a tin.
The same seller has another tin by the same artist for much less. Granted, it is far less attractive, but I'm not sure why the large disparity in prices. Here's the link to that tin.
http://cgi.ebay.ca/ART-NOUVEAU-COCO...2ea8d8c9c1