A 500 year old "pysanka" Easter egg was found during an archaeological dig of a cistern in Lviv, Ukraine. The egg is probably a goose egg and is very well preseved.
Other pysanka have been found in the the area that date as far back as the 12th century, but those eggs were made out of ceramic. Pysanka is a style of decorating eggs that involves drawing designs in wax and dyeing the eggs to create a pattern in the undyed space. [photo]