I probably got your hint wrong, I thought it was an early Daimler racer (pre 1900), but since Mercedes appeared around 1901, I thought it was too 'new' and you meant Benz, because it was strongly related to Daimler and because they had some old 'rennwagen' too.
No need to start a discussion, I can always made some mistakes
So that is a Mercedes and was built before 1905?