As the mechanical movements do not withstand the vibrations in the casing well, we had this clock converted to the more vibration-resistant motometer quartz movement of the later clocks. After the overhaul, the clock has not yet been reinstalled. Ideal for true-to-original R 90 S models where the clock should continue to function for a long time. Numerous instruments and additional instrument models available, including overhauled speedometers with various tachometers. We have numerous used parts, including instruments (speedometers, rev counters, clocks, etc.) in stock. We can also procure many new parts. Please just mail or call us!