XV105, XH558 and XM665 - I worked on all of them and most of their sister ships. Flew out to Changi on 105 in '69 in fact (I remember the tail number 'cos 105 was my Entry number in Brats). I find it amazing that two of the Vulcans and a few of the VC10s are still able to move under their own steam. (PA474 too - and I worked on that as well before it went to the BBMF!) Yet I've seen B757s that I watched being built on the Renton production line being flown off to the scrapyard at the end of their useful life. Ain't aviation a strange world?