Hi Ziad,<p>the first three digits determine the "series" or "Baumuster" 460, 461, 462 or 463, the next three body and engine type, the next 1=LHD 2=RHD, the next one I don´tknow and the last six tell you about the actual production no, starting with 000001.<p>Best of luck - frank<br><p>