rear view mirror

No, not the Evil Queen from Snow White***, and not the "Spock With A Beard" episode from Star Trek! "....On the car, who is the smartest parts geek by far?" Which of our esteemed members knows the most obscure trivia about inside rear view mirrors for FIATs in general and X1/9s in particular...

My rear view mirror is in pretty rough shape as far as the mirror surface goes. Is there any prevailing wisdom on the best way to open it up and remove the mirror glass? I figure if I can get to it without destroying the housing, it should be easy to get a replacement cut at a glass shop. Any...