Well I pulled mine just now and was wondering if it had the right one in it. It looks to be original (looks vintage '76) and has the Hirschman funny h on the top however, it seems to be a smooth belt but has what appears to be slight gear marks up and down it. Is this normal or did someone replace a toothed one mistakenly with a smooth one in the past?

-Scott

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1979 240d 177k Sold
1976 300d ~220k daily driver For Sale
1977 450slc Sold