I've just found this: http://www.psychoont...z-300-slr-no-5/
The article says that the Schlumpf Museum obtained it by swapping a W196 with Mercedes. But, how did they acquire the W196? I thought that the only W196 that 'escaped' from Daimler-Benz is the one that was donated to the [British] National Motor Museum and subsequently sold by them.