Guide price: £500 - £600. This travelling case was used in Rob's personal 1954 Mercedes-Benz 300SL and still carries Rob's name tags. Rob Walker ran his privateer Racing Team in Formula One during the 1950s and 1960s and was the most successful privateer in F1 history, famously using the blue and white stripe racing colours of Scotland. Supplied with a COA signed by Rob's son, Robbie Walker.