How old is your globe? SEP 01 2011
This handy chart of defunct country names can help you determine the age of your globe.
When you find the FORMER place name on your globe instead of the NEW name, you have confimed the age of your globe.
Update: XKCD's sliiiiiightly fictitious Guide to Figuring Out the Age of an Undated World Map would be a good way to present the chart above.