Is the watch value more affected by the fact it was owned by Brando or because it was featured in the classic war movie Apocalypse Now! 
Don't ya just "love the smell of napalm in the morning? It smells like victory." Or perhaps you just tied in to a bad cup of Joe?Oh, that's ridiculous. The watch is barely seen in the film (or so I understand) and Brando isn't a household name these days, nor is that film much remembered today.
In other auction news, Princess Di's black dress, which she wore when she danced with John Travolta and Ronnie Raygun at the White House, didn't move at £200G.
I certainly agree with your conclusions. It is my understanding that the character played by Brando was in fact Colonel David H. Hackworth/ The Colonel wrote a treatise on the Vietnam war, recommending some pretty extreme and, some of his superiors argued, outrageous tactics. He gained quite the reputation for having his men employ tactics very similar to those employed by the Viet Cong and North Vietnamese oponets we faced, but he is also one of, if not the most decorated soldier in the US military.Great Movie that kind of came off the tracks when Brando appeared.