(Not sure these are worth their own thread, so i'll tack them on here)
These are from the "Special Effects Museum" held at Tokyo Metropolitan Museum of Contemporary Art from October 8,2012 - July 10, 2012. This is where the "Giant God Warrior Appears in Tokyo" short came from (viewtopic.php?f=14&t=18627)
The back side of all 4 coins is the same