In the photo, Patriarch Meletios of Alexandria meets with the Anglican Archbishop Cosmo Gordon Lang of Canterbury, 8 July 1930. Note the double headed eagle. This is not wrong for him to wear, but it is very unusual that a church leader would do so. Generally they wear a cross, an ikon (religious picture), or both. The double headed eagle is a legitimate symbol, sometimes used in Orthodoxy, because it was the symbol of the Byzantine Empire, the state that most strongly fostered Greek Orthodoxy. The state and the church were particularly close.