Heh heh...
Logic says's 50%. But from the spoiler it couldn't be. So then maybe 100%? But then that is too obvious and you give the example of 60%.
Sometimes I can be very dumb. But a coin has 2 sides... Unless you count the rim, so then it would be 33.33333333%.
But a chance of 60 %? Does it have more sides or something?