dontbanme

I am interested in the wheels listed in the ad that is linked below, but I need to find the offset first. Unfortunately, the owner didn't purchase the wheels and doesn't know what kind of Benz they came off of. It appears that they fit his old 300 just fine. Anyone recognize the wheels in the ad? I may purchase them if the offset is correct.

http://daytona.craigslist.org/pts/2079913554.html