The 707-436 came to be known, unkindly, as 'The Old Banger' contrasting with the much newer JT3D-3 powered -336s which were then beginning to arrive in some numbers. What a good aircraft that was. The initial three came as freighters, but with a complete set of passenger cabin windows. Hmm ...
The VC10, incidentally, was christened 'The Iron Duck' because from certain angles in flight, it kind of looked like one.