This is funny :)
On the 2010 page of the Tokyo Mineral show there are three dates
-December 10 - 13, 2010 in the middle
-Tokyo mineral show 2008 on the left
-and 19th International Minerals & Fossils Show December 11-14 on the top
As if Japanese is not already confusing enough

Period December 10 - 13, 2010
■Time 10:00 - 18:30 (Final Day - 16:00)
■Venue IKEBUKURO Sunshine city Bunka-Kaikan 2F・3F
Access Map(Japanese Only)
■Admissions Adults \800 J.High School students \500 (With Guide book)
Elementary school students are admitted free.
■Organizers PLANEY CO.,LTD.
ps
http://www.mindat.org/forum.php?read,64,202207,202386#msg-202386