 The new version was serialised in Tintin magazine from June to December 1965 , before Casterman published it in a collected volume in 1966 . Studios Hergé made many alterations to the illustrations as a result of de Moor 's research . Reflecting the fact that television had become increasingly commonplace in Western Europe , Hergé changed the prose from " It 's a television set ! " to " It 's only a television set ! " However , as colour television was not yet available in Britain , the screen on the television encountered in Britain was once again reverted to black @-@ and @-@ white . Additionally , at least one line of dialogue was " softened " from the original version - in one scene where Tintin aims a pistol at two of the counterfeiters , he states , " Get back ! And put up your hands ! " compared to the original 's " Take one more step and you 're dead ! " . The counterfeit notes that Tintin finds were also increased in value , from one pound to five pounds . The multiple aircraft featured throughout the story were redrawn by Studios member Roger Leloup , who replaced the depiction of planes that were operational in the 1930s to those active at the time , such as a Percival Prentice , a D.H. Chipmunk , a Cessna 150 , a Tiger Moth , and a British European Airways Hawker Siddeley Trident . 
