This is probably the oldest man-made incense that you will ever experience; dating from the late Roman Empire, if not earlier.
God's Smile is an incense blend made by the
monks of the Coptic desert monasteries in Egypt and the recipe has not
changed since their foundation in the 350 A.D. Even then it was an ancient
formula which the monks claim is based on the sacred incense described in
the Book of Exodus.