Front license plate holder

    The place where I bought my 1999 sl500 finally sent me the license plate holder for the front license plate. But, I think it is not complete. All I got was one piece which is obvously formed to fit on the front bumper with two prongs coming out of the rear, but, I cannot find any attachment points.

Anybody know if I am missing something or something?

You can find more here:
 
http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=129068&M=113%2E961&GA=722%2E624&CT=F&cat=44F&SID=88&SGR=030&SGN=02