They were not for specific films as I understand, just general tests. Welles complete lack of interest in Hollywood prior to the generous R.K.O. offer would probably be one of those "myths" we've been talking about. The fact that he was interested in film from an early age suggests he must have toyed with the idea of being a movie actor or director. I suspect he was invited to Hollywood by Warner Brothers sometime after the success of "Julius Caesar" (or perhaps "Dr. Faustus") which would have demonstrated his serious acting ability in addition to his production work. The tests probably didn't amount to much at the time, so he didn't care to draw attention to them. I recall reading that after "War Of The Worlds" broke, Welles spent more time courting Hollywood, but felt he could hold out for something more remarkable than a leading role or supporting part in someone else's project. He would have been quite interested in a Hollywood career, but only one that would be a continuation of the standards he had set on stage and radio (which, of course, is why he picked "Heart Of Darkness" as his first film, then stumbled for a while when that project proved too expensive).