When I check my profile on stackoverflow.com on the upper part (me logged in) it shows these badges, so there are 2 silver and 13 bronze. (15)
However, when I go down to the actual list I see there are only 14 badges.
So there's a math overflow! Now this is a bug!
EDIT: Maybe this is related to my last badge Revival when it appeared as it was x2. However, I could only see one of the posts, the other showed as not available. Can anyone check this?