Yes, I think you are right;
http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=140134&M=603%2E971&GA=722%2E367&CT=F&cat=19B&SID=80&SGR=066&SGN=05
and for a price of ~$10, you can always try it out and see.
I also did a search on google on that number, and got this page;
http://www.4mercs.com/MB%20Inventory.txt
where it is listed as "CHROME SURROUND MARKER"
br,
syljua