I just read the Senna biography by Tom Rubython and it mentions Prost giving away the constructor's trophy at the 1989 Italian GP. I know that Mclaren strives to keep all of their trophies, but is this the only one missing from their collection? Also who is that guy meant to be in the Tooned cartoon who keeps stealing trophies? Fernando?
There are very rare instances where the driver keeps the original, Coulthard kept his 2nd place trophy from the Spanish GP after he was involved in the plane crash the week or so before. Pretty sure Lewis got to keep his trophy from Canada 2007.