This is a wonderful find! This is the HO Scale Mercedes-Benz Esso Tanker from Wiking. Released 20+ years ago, this is a great truck. The trailer has begun to fade, but cab has remained white. This is typical of the time these were produced, as they were produced in different runs, using different plastic.

If you collect Mercedes, Tankers, Wiking, or HO Scale vehicles this is an amazing car for your collection! (1:87 Scale)