I was told that these were the part numbers on Euro 500e (hella) headlights by an ebay seller in Germany:

001-138 325
001-138 326

Here is the auction:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7967305063&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1

Are those HELLA numbers missing the prefix? Or are they MB numbers? Can anyone please help confim?

Thank you

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1989 300CE Astralsilber/Schwarz
1992 300CE Schwarz/Schwarz