If I had to name the rarest MB I have known it would have to be the 1936 500K cabriolet one of our club members here in Sydney owned some years ago. He restored the car over a period of years then enjoyed it for probably another 10 years, driving it on club events and showing it at concours where it was always a great crowd puller. I can still remember that huge supercharged straight 8 with the chrome exhausts visible outside the engine bay. Eventually he decided to sell it and I believe it is in China now.

__________________
107.023: 350SLC, 3-speed auto, icon gold, parchment MBtex (sold 2012 after 29 years ownership).
107.026: 500SLC, 4-speed auto, thistle green, green velour.
124.090: 300TE, 4-speed auto, arctic white, cream-beige MBtex.
201.028: 190E 2.3 Sportline, 5-speed manual, arctic white, blue leather.
201.028: 190E 2.3, 4-speed auto, blue-black, grey MBtex.
201.034: 190E 2.3-16, 5-speed manual, blue-black, black leather.