Looking back at the original 1932-3 black and white version, the guard and the fakir are two clearly different people. As you say, the beards are different, and this is more markedly so in the old version. Also the guard's turban has a loosened cloth at the back, which I believe is symbolic of some form of Sikhism (can anyone help?), while the fakir's turban is neatly tucked in. So I think it is fair to assume that they were originally intended to be two different people, and that Hergé had no need to change this for the modern colour version twenty years later.
Ed |