After 12 years of ownership, my beloved 6.9 is for sale:
https://www.carsales.com.au/cars/details/1978-mercedes-benz-450sel-6-9-auto/OAG-AD-18108439
https://www.carsales.com.au/cars/details/1978-mercedes-benz-450sel-6-9-auto/OAG-AD-18108439