I have a 505 it's not the ceramic but a composite case that's brown in color. I got it new in February this year and so far the case has been great no scratches or marks on it. I think over time it may get a nice patina on it but only time will tell. At 45mm I was shocked at how great it fits on my wrist. It's also very light weight and wears great. I also love the way Panerai matched the dial with the strap. 

