A search on ebay for car stereo shows on the one hand lots of devices without detacheable face and on the other hand faces without player. Many others although complete but sold without lock code.

That says it all!

__________________
1996 E320 since 1/16/08, 171K miles as of Feb 2011

---------------------------------------------------------
1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE