It could mean its made in Germany.
However many of the BBS forged rims are made in Japan. It could be an 18 inch rims with CSL lookalike design.
The original CSL rims are 19 inch, then a Competition Package (from 2004 onwards) came out with almost similar rims like the CSL but with a narrower front using 235/35/19 tire. CSL rim uses 245/35/19 at the front.
Cheers